1.
USS Arizona (BB-39)
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USS Arizona was a Pennsylvania-class battleship built for and by the United States Navy in the mid-1910s. Named in honor of the 48th states recent admission into the union, although commissioned in 1916, the ship remained stateside during World War I. Shortly after the end of the war, Arizona was one of a number of American ships that briefly escorted President Woodrow Wilson to the Paris Peace Conference, the ship was sent to Turkey in 1919 at the beginning of the Greco-Turkish War to represent American interests for several months. Several years later, she was transferred to the Pacific Fleet, aside from a comprehensive modernization in 1929–31, Arizona was regularly used for training exercises between the wars, including the annual Fleet Problems. When an earthquake struck Long Beach, California, in 1933, Two years later, the ship was featured in a Jimmy Cagney film, Here Comes the Navy, about the romantic troubles of a sailor. In April 1940, she and the rest of the Pacific Fleet were transferred from California to Pearl Harbor, Hawaii, during the Japanese attack on Pearl Harbor on 7 December 1941, Arizona was bombed. After a bomb detonated in a magazine, the battleship exploded violently and sank, with the loss of 1,177 officers. Unlike many of the ships sunk or damaged that day, Arizona was irreparably damaged by the force of the magazine explosion. The wreck still lies at the bottom of Pearl Harbor and the USS Arizona Memorial, dedicated on 30 May 1962 to all those who died during the attack, the Pennsylvania-class ships were significantly larger than their predecessors, the Nevada class. Arizona had a length of 608 feet, a beam of 97 feet. This was 25 feet longer than the older ships and she displaced 29,158 long tons at standard and 31,917 long tons at deep load, over 4,000 long tons more than the older ships. The ship had a height of 7.82 feet at deep load. The ship had four direct-drive Parsons steam turbine sets, each of which drove a propeller 12 feet 1.5 inches in diameter and they were powered by twelve Babcock & Wilcox water-tube boilers. The turbines were designed to produce a total of 34,000 shaft horsepower, but only achieved 33,376 shp during Arizonas sea trials, however, she did manage to reach 21.5 knots during a full-power trial in September 1924. She was designed to normally carry 1,548 long tons of fuel oil, at full capacity, the ship could steam at a speed of 12 knots for an estimated 7,552 nautical miles with a clean bottom. She had four 300-kilowatt turbo generators, Arizona carried twelve 45-caliber 14-inch guns in triple gun turrets. The turrets were numbered from I to IV from front to rear, the guns could not elevate independently and were limited to a maximum elevation of +15° which gave them a maximum range of 21,000 yards. The ship carried 100 shells for each gun, defense against torpedo boats was provided by twenty-two 51-caliber five-inch guns mounted in individual casemates in the sides of the ships hull
2.
Naval Review
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This page describes reviews of the US Fleet. For Fleet Reviews of the Royal Navy, see Fleet Review, or for reviews of other national navies, for the magazine Naval Review, see Naval Review. A Naval Review is an event, where the whole of the United States Navy is paraded to be reviewed by the President of the United States or the Secretary of the Navy and it often includes warships and delegates from other national navies. It is more regular and frequent than its British equivalent, the Fleet Review, following is a list of past Naval Reviews, by President. Each was reviewed by the President, unless otherwise noted, Atlantic Fleet and Supreme Allied Commander Atlantic USS Forrest Royal USS Charles H. Roan USS Hyman USS Hunt USS Donner USS Ray USS Cavalla 26 June 1959, USS Lake St. Other naval vessels included, USS Dale HMS Bacchante as Royal Navy representative HNLMS Tromp as representative of the Koninklijke Marine El Horria as the Egyptian representative. 1986, International Naval Review for the rededication of the Statue of Liberty which included USS John F. Kennedy as the flagship of the review fleet
3.
Newport News Shipbuilding
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Founded as the Chesapeake Dry Dock and Construction Co. in 1886, Newport News Shipbuilding has built more than 800 ships, including both naval and commercial ships. Located in the city of Newport News, their facilities more than 550 acres. The shipyard is building the aircraft carriers USS Gerald R. Ford, also under construction are the Virginia-class submarines USS Indiana and USS Washington. In 2013, Newport News Shipbuilding began the deactivation of the first nuclear-powered aircraft carrier, USS Enterprise, Newport News Shipbuilding also performs refueling and complex overhaul work on Nimitz-class aircraft carriers. This is a four-year vessel renewal program that not only involves refueling of the nuclear reactors. The yard has completed RCOH for four Nimitz-class carriers, as of May 2016 this work was underway for the fifth Nimitz-class vessel, USS Abraham Lincoln. Industrialist Collis P. Huntington provided crucial funding to complete the Chesapeake and Ohio Railroad from Richmond, however, building the railroad and coal pier was only the first part of Huntingtons dreams for Newport News. In 1886 he built a shipyard to repair ships servicing this transportation hub, in 1891 Newport News Shipbuilding and Drydock Company delivered its first ship, the tugboat Dorothy. By 1897 NNS had built three warships for the US Navy, USS Nashville, Wilmington and Helena, when Collis died in 1900, his nephew Henry E. Huntington inherited much of his uncles fortune. He also married Collis widow Arabella Huntington, and assumed Colliss leadership role with Newport News Shipbuilding, under Henry Huntingtons leadership, growth continued. In 1906 the revolutionary HMS Dreadnought launched a naval race worldwide. Between 1907 and 1923, Newport News built six of the US Navys total of 22 dreadnoughts – USS Delaware, Texas, Pennsylvania, Mississippi, Maryland, all but the first were in active service in World War II. In 1907 President Theodore Roosevelt sent the Great White Fleet on its round-the-world voyage, NNS had built seven of its 16 battleships. In 1914 NNS built SS Medina for the Mallory Steamship Company, in the early years, leaders of the Newport News community and those of the shipyard were virtually interchangeable. Post served from March 9,1911 to Feb.12,1912, earlier, he had come to the area as one of the builders of the C&O Railways terminals, and had served as the first mayor of Newport News after it became an independent city in 1896. It was on March 14,1914 that Albert Lloyd Hopkins and his assistant, Frederic Gauntlett, was also on board, but was able to swim to safety. Homer Lenoir Ferguson was company vice president when Hopkins died, and he saw the company through both world wars, became a noted community leader, and was a co-founder of the Mariners Museum with Archer Huntington. He served until July 31,1946, after the second World War had ended on both the European and Pacific fronts
4.
Brooklyn Navy Yard
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It was bounded by Navy Street and Flushing and Kent Avenues, and at the height of its production of warships for the United States Navy, it covered over 200 acres. The tremendous efforts of its 70,000 workers during World War II earned the yard the nickname The Can-Do Shipyard, following the American Revolution, the waterfront site was used to build merchant vessels. Federal authorities purchased the old docks and 40 acres of land for $40,000 in 1801, many officers were housed in Admirals Row. Military chain of command was strictly observed, the nations first ironclad ship, Monitor, was fitted with its revolutionary iron cladding at the Continental Iron Works in nearby Greenpoint. By the American Civil War, the yard had expanded to employ about 6000 men, in 1890, the ill-fated Maine was launched from the yards ways. In 1937, the battleship North Carolina was laid down, in 1938, the yard employed about 10,000 men, of whom one-third were Works Progress Administration workers. The battleship Iowa was completed in 1942 followed by the Missouri, on 12 January 1953, test operations began on Antietam, which emerged in December 1952 from the yard as Americas first angled-deck aircraft carrier. At its peak, during World War II, the yard employed 70,000 people,24 hours a day, the Brooklyn Naval Hospital, constructed 1830–38 and rebuilt 1841–43, was decommissioned in the mid-1970s. It was one of the oldest naval hospitals in the United States, the 60, 000-square-foot complex was designed by Martin E. Thompson. The hospital had its beginning in 1825 when the Secretary of the Navy purchased 25 acres adjacent to the Brooklyn Naval Yard. The hospital was active from the Civil War through World War II with the Navy Surgeon General reporting in 1864 an average of 229 patients, the hospital also counted on its staff some of first female nurses and medical students in the United States Navy. On November 19,1964, based on the study, the closure of the yard was announced, along with the Armys Fort Jay on Governors Island and its Brooklyn Army Terminal. At the time, the yard employed 10,600 civilian employees and 100 military personnel with a payroll of about US$90 million. The closure was anticipated to save about 18.1 million dollars annually, the plan was never put in place. The Wagner Administration looked to the industry to build a car plant inside the yard. No U. S. car manufacturer was interested, and foreign car manufacturers claimed that with the conversion of the dollar, the Navy decommissioned the yard in 1966, after the completion of the Austin-class amphibious transport dock USS Duluth. The Johnson administration refused to sell the yard to the City of New York for 18 months, when the new Nixon administration came into power, they signed the papers to sell the yard to the city. Leases were signed inside the yard even before the sale to the city was signed, cLICKs lease with the newly formed Seatrain Shipbuilding was not very business friendly
5.
Nevada-class battleship
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The two Nevada-class battleships were the first Standard-type battleships produced by the U. S. Navy, and also the first to use triple main turrets. Nevada and Oklahoma were both ordered in March 1911 and they would be followed by the Pennsylvania-class battleships. The standard type design was maintained until after WWI including the ship classes Pennsylvania, New Mexico, Tennessee, All of these ships shared the following design features, four main turrets, all or nothing armor scheme including significant deck armor and completely oil-fired propulsion. This combination of features made the Nevadas the prototype of the modern battleship, for example, the protection of the standard class battleships was not significantly revised after the Battle of Jutland, while other Navies tended to have different pre- and post-Jutland designs. Active in the Atlantic Ocean before and during World War I and their service continued after the Great War, though by the early 1920s they were the oldest of the main Battle Fleet units. Both were extensively modernized between 1927 and 1929, Oklahoma was sunk during the attack on Pearl Harbor in 1941 and was a total loss. Nevada beached herself during this raid to prevent blocking the entrance after receiving damage. She provided gunfire support for operations in the European and Pacific theaters. With these ships the U. S. Navy developed a template known as the Standard-type battleship that it would use until the Washington Naval Treaty brought an end to construction in 1922. The decision to mount triple gun turrets proved controversial, shipbuilders warned that triple turrets could affect a ships stability adversely because of their greater weight, especially when raised in a superfiring mounting. It also eliminated the challenges of steam lines running through main gun magazines and ineffective placement of heavy guns, the Navy would use triple turrets in almost all of its subsequent battleship designs. The Nevadas were also the first U. S. battleships to use the all or nothing principle of armor protection, previous battleships had armor of varying thickness depending on the importance of the area it was protecting. The ships overall design, especially the triple turrets, was to reduce the length of the portion of the ship. Heavy deck armor was emphasized to guard against plunging fire, in short, the Nevadas were designed specifically to fight at the extreme ranges expected by gunnery experts. In that sense, they were ahead of their time. While other navies distinguished between their pre- and post-Jutland capital ship designs, the U. S. Navy did not feel so compelled, Nevada and Oklahoma were 583 feet long overall, with a beam at the waterline of 95.23 feet. They displaced 27,500 long tons at load and 28,400 long tons at deep load and had a draft of 27.65 feet at normal load and 29.5 feet at full load. Like preceding classes of American and foreign dreadnoughts, they were designed with a ram bow, from the Battle of Lissa in 1866 until shortly before World War I, ramming was thought to be an important tactic and most large warships were designed with this in mind
6.
New Mexico-class battleship
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The New Mexico-class battleships of the United States Navy, all three of whose construction began in 1915, were improvements on the design introduced three years earlier with the Nevada class. The twelve-gun main battery of the preceding Pennsylvania class was retained, hull design was also upgraded with a clipper bow for better seakeeping and a sleeker look. One ship, New Mexico, was fitted with turbo-electric propulsion. S, completed during and soon after World War I, the New Mexicos were active members of the Battle Fleet during the decades between the World Wars. All were rebuilt between 1931 and 1934, receiving entirely new superstructures, modern controls for their guns, new engines and improved protection against air, anti-torpedo bulges increased their width to 106 feet 3 inches and displacement went up by a thousand tons or more. The New Mexico class was part of the standard-type battleship concept of the U. S. Navy, the standard-type battleship concept included long-range gunnery, moderate speed of 21 knots, a tight tactical radius of 700 yards and improved damage control. The other standard-type battleships were the Nevada, Pennsylvania, Tennessee, in order to counter the German threat, these ships—operating together as Battleship Division 3—were transferred from the Pacific to the Atlantic in 1941, leaving the U. S. Pacific Fleet inferior in battleship strength to the Japanese Navy, sent back to the Pacific after the Pearl Harbor raid devastated the Pacific Fleets powerful battle line, they were active in the war with Japan until final victory was achieved in August 1945. New Mexico and Idaho were disposed of soon after the war ended, the U. S. Navys first generation of ship-launched guided missiles went to sea aboard this old former battleship. Designated as Battleship 1916, the history is marked by the incipient test firing of the 16-inch /45 caliber U. S. naval gun. The gun promised to deliver twice the energy of a 12-inch /50 caliber Mark 7 gun and 1.5 times the energy of a 14-inch /45 caliber gun, the problem was that the 16-inch gun was not tested. If the gun failed then the design would have to wait for new 14-inch turrets to be fabricated, the first design offered to C&R was no less than 10 16-inch guns and 8 torpedoes. The design also included upgrading the armor as well as extending it, a secondary battery of 6-inch guns was incorporated into the design. The General Board arguing that the range of torpedoes required the increase of caliber. In August 1914 the 16-inch gun was successfully test fired silencing that question, the rise in displacement and the rise in the cost of the new design presented issues. The General board pushed for the advancement with C&R wanting to repeat the Pennsylvania class, both the Secretary of the Navy Josephus Daniels and the House of Representatives rose up against the cost. The General Board was convinced that the sea powers would jump to 15-inch or 16-inch naval guns as a main armament. A series of designs was laid out with the last being a design with 8 16-inch guns on the 31,000 long tons design of the earlier Pennsylvania design, no one reviewing the design was at all happy with it. Strangely enough, this would except in details, become the blueprint of the Colorado-class battleships
7.
Dreadnought
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The dreadnought was the predominant type of battleship in the early 20th century. Dreadnoughts design had two features, an all-big-gun armament scheme, with more heavy-calibre guns than previous ships. As dreadnoughts became a symbol of power, the arrival of these new warships was a crucial catalyst in the intensifying naval arms race between the United Kingdom and Germany. With the launch of a ship, Dreadnought, the scales of naval power were reset overnight. As a result, dreadnought races sprang up around the world, including in South America, successive designs increased rapidly in size and made use of improvements in armament, armour, and propulsion throughout the dreadnought era. Within five years, new battleships had outclassed Dreadnought and these more powerful vessels were known as super-dreadnoughts. The only surviving dreadnought is USS Texas, located near the San Jacinto Battleground State Historic Site, dreadnought-building consumed vast resources in the early 20th century, but there was only one battle between large dreadnought fleets. In the 1916 Battle of Jutland, the British and German navies clashed with no decisive result, some designs had an intermediate battery of 8-inch guns. Serious proposals for an all-big-gun armament were circulated in several countries by 1903, all-big-gun designs commenced almost simultaneously in three navies. In 1904, the Imperial Japanese Navy authorized construction of Satsuma, work began on her construction in May 1905. The Royal Navy began the design of HMS Dreadnought in January 1905, finally, the US Navy gained authorization for USS Michigan, carrying eight 12-inch guns, in March 1905, with construction commencing in December 1906. The newest 12-inch guns had longer range and fired heavier shells than a gun of 10-inch or 9. 2-inch calibre, there is still debate as to whether this feature was important. At these ranges, lighter guns had good accuracy, and their rate of fire delivered high volumes of ordnance on the target. Naval gunnery was too inaccurate to hit targets at a longer range, by the early 20th century, British and American admirals expected future battleships would engage at longer distances. Newer models of torpedo had longer ranges, for instance, in 1903, the US Navy ordered a design of torpedo effective to 4,000 yards. Both British and American admirals concluded that they needed to engage the enemy at longer ranges, in 1900, Admiral Sir John Jackie Fisher, commanding the Royal Navy Mediterranean Fleet, ordered gunnery practice with 6-inch guns at 6,000 yards. By 1904 the US Naval War College was considering the effects on battleship tactics of torpedoes with a range of 7,000 yards to 8,000 yards, the range of light and medium-calibre guns was limited, and accuracy declined badly at longer range. At longer ranges the advantage of a rate of fire decreased, accurate shooting depended on spotting the shell-splashes of the previous salvo
8.
Displacement (ship)
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The displacement or displacement tonnage of a ship is the ships weight. The name reflects the fact that it is measured indirectly, by first calculating the volume of water displaced by the ship, by Archimedes principle, this is also the weight of the ship. Displacement should not be confused with other measurements of volume or capacity typically used for vessels such as net tonnage, gross tonnage. The process of determining a vessels displacement begins with measuring its draft This is accomplished by means of its draft marks, a merchant vessel has three matching sets, one mark each on the port and starboard sides forward, midships, and astern. These marks allow a ships displacement to be determined to an accuracy of 0. 5%, the draft observed at each set of marks is averaged to find a mean draft. The ships hydrostatic tables show the corresponding volume displaced, to calculate the weight of the displaced water, it is necessary to know its density. Seawater is more dense than water, so a ship will ride higher in salt water than in fresh. The density of water varies with temperature. Devices akin to slide rules have been available since the 1950s to aid in these calculations and it is done today with computers. Displacement is usually measured in units of tonnes or long tons and these bring the ship down to its load draft, colloquially known as the waterline. Full load displacement and loaded displacement have almost identical definitions, full load is defined as the displacement of a vessel when floating at its greatest allowable draft as established by classification societies. Warships have arbitrary full load condition established, deep load condition means full ammunition and stores, with most available fuel capacity used. Light displacement is defined as the weight of the ship excluding cargo, fuel, water, ballast, stores, passengers, crew, normal displacement is the ships displacement with all outfit, and two-thirds supply of stores, ammunition, etc. on board. Standard displacement, also known as Washington displacement, is a term defined by the Washington Naval Treaty of 1922. Naval architecture Hull Hydrodynamics Tonnage Dear, I. C. B, oxford Companion to Ships and the Sea. George, William E. Stability & Trim for the Ships Officer, turpin, Edward A. McEwen, William A. Trim and Stability Information for Drydocking Calculations, conference on the Limitation of Armament,1922. Papers Relating to the Foreign Relations of the United States,1922, proceedings of the United States Naval Institute
9.
Waterline length
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The waterline length is the length of a ship or boat at the point where it sits in the water. It excludes the length of the boat, such as features that are out of the water. Most boats rise outwards at the bow and stern, so a boat may be quite a bit longer than its waterline length. In a ship with raked stems, naturally the waterline length changes as the draft of the ship changes. Length at the waterline is often abbreviated as lwl, w/l and this measure is essential in determining a lot of properties of a vessel, such as how much water it displaces, where the bow and stern waves are, hull speed, amount of bottom-paint needed, etc. In sailing boats, longer waterline length will usually enable a greater speed, because it allows greater sail area. Higher beam and draft causes higher resistance against the water and this maximum speed, also known as theoretical hull speed, can be calculated using the formula x 1.34. Length overall Length between perpendiculars Hayler, William B, keever, John M. American Merchant Seamans Manual. Turpin, Edward A. McEwen, William A
10.
Babcock & Wilcox
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Babcock & Wilcox Enterprises is an American power generation company headquartered in Charlotte, North Carolina. The company was founded in 1867 in Providence, Rhode Island by partners Stephen Wilcox and George Babcock as Babcock, Wilcox & Company to manufacture, built nuclear-powered surface ship, NS Savannah. B&Ws boilers supply more than 300,000 megawatts of installed capacity in over 90 countries around the world, a reactor from B&W was destroyed by a nuclear meltdown in the Three Mile Island accident. During World War II, over half of the US Navy fleet was powered by Babcock & Wilcox boilers, the company has its headquarters in Charlotte, North Carolina. B&W also has joint major joint venture companies in Beijing and the Indian city of Pune, on June 30,2015, Babcock & Wilcox completed a spinoff from BWX Technologies, its former parent which is now headquartered in Lynchburg, Virginia. The two companies began trading separately on July 1, B&W employs approximately 5,700 people, in addition to several thousand joint venture employees. B&W PGG and its subsidiaries have facilities in Ohio, Wisconsin, Arona, Italy, Beijing, China, Esbjerg, Denmark, Babcock & Wilcox MEGTEC LLC B&W SPIG Diamond Power International, Inc. The boilers more safely generated higher pressure steam and was more efficient than existing designs, in 1891, Babcock & Wilcox Ltd is established as a separate United Kingdom company, to be responsible for all sales outside the US and Cuba. In 1902 the New York Citys first subway is powered by B&W boilers, during 1907 and 1909 Theodore Roosevelts Great White Fleet were powered by B&W Boilers. In 1929 B&W installs the worlds first commercial size recovery boiler using the magnesium bisulfite process in Quebec, between 1941 and 1945 B&W designed and delivered 4,100 marine boilers for combat and merchant ships, including 95 percent of the US fleet in Tokyo Bay at Japanese surrender. In 1942, the developed the cyclone furnace. Between 1943 and 1945 B&W provided components, materials and process development for Manhattan Project, between 1949 and 1952 B&W provided the 8 boilers for the SS United States, the fastest ocean liner ever constructed. Between 1953 and 1955 B&W designed and fabricated components for USS Nautilus, in 1961 B&W designed and supplied reactors for world’s first commercial nuclear ship NS Savannah. In 1962 B&W designed and furnished reactor systems for B&Ws first commercial reactor, Indian Point, in 1975 B&W designed and built components for liquid metal fast breeder reactors. In 1975 the long term agreements with the British Babcock & Wilcox Ltd were ended. Subsequently, the British company was renamed Babcock International Group plc, in 1978 B&W designed and built the nuclear reactor that was involved in the Three Mile Island accident. In 1999 B&W was awarded the contract to develop fuel cells, on February 22,2000, B&W filed for Chapter 11 bankruptcy in part as a result of thousands of claims for personal injury due to prolonged exposure to asbestos and asbestos fibers. Claims included asbestosis, lung cancer, pleural and peritoneal mesothelioma, as a condition of emerging from bankruptcy, B&W created a trust fund to compensate victims, but for amounts far less than settlements paid in individual personal injury lawsuits
11.
Water-tube boiler
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A watertube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes, in smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes that make up the walls of the furnace to generate steam. The heated water rises into the steam drum. Here, saturated steam is drawn off the top of the drum, in some services, the steam will reenter the furnace through a superheater to become superheated. Superheated steam is defined as steam that is heated above the point at a given pressure. Superheated steam is a dry gas and therefore used to drive turbines, cool water at the bottom of the steam drum returns to the feedwater drum via large-bore downcomer tubes, where it pre-heats the feedwater supply. To increase economy of the boiler, exhaust gases are used to pre-heat the air blown into the furnace. Such watertube boilers in thermal power stations are called steam generating units.4 MPa. A water tube boiler was patented by Blakey of England in 1766 and was made by Dallery of France in 1780. e, approximately 16 megapascals and high temperatures reaching up to 550 °C are generally required. For example, the Ivanpah solar-power station uses two Rentech Type-D watertube boilers, modern boilers for power generation are almost entirely water-tube designs, owing to their ability to operate at higher pressures. Where process steam is required for heating or as a chemical component and their ability to work at higher pressures has led to marine boilers being almost entirely water-tube. This change began around 1900, and traced the adoption of turbines for propulsion rather than reciprocating engines – although watertube boilers were used with reciprocating engines. There has been no significant adoption of water-tube boilers for railway locomotives, a handful of experimental designs were produced, but none of these were successful or led to their widespread use. Most water-tube railway locomotives, especially in Europe, used the Schmidt system, most were compounds, and a few uniflows. The Norfolk and Western Railways Jawn Henry was an exception, as it used a steam turbine combined with an electric transmission, LMS6399 Fury Rebuilt completely after a fatal accident LNER10000 Hush hush Using a Yarrow boiler, rather than Schmidt. Never successful and re-boilered with a conventional boiler, a slightly more successful adoption was the use of hybrid water-tube / fire-tube systems. As the hottest part of a boiler is the firebox, it was an effective design to use a water-tube design here. One famous example of this was the USA Baldwin 4-10-2 No, operating as a compound at a boiler pressure of 2,400 kilopascals it covered over 160,000 kilometres successfully
12.
Horsepower
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Horsepower is a unit of measurement of power. There are many different standards and types of horsepower, two common definitions being used today are the mechanical horsepower, which is approximately 746 watts, and the metric horsepower, which is approximately 735.5 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of engines with the power of draft horses. It was later expanded to include the power of other types of piston engines, as well as turbines, electric motors. The definition of the unit varied among geographical regions, most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on January 1,2010, units called horsepower have differing definitions, The mechanical horsepower, also known as imperial horsepower equals approximately 745.7 watts. It was defined originally as exactly 550 foot-pounds per second [745.7 N. m/s), the metric horsepower equals approximately 735.5 watts. It was defined originally as 75 kgf-m per second is approximately equivalent to 735.5 watts, the Pferdestärke PS is a name for a group of similar power measurements used in Germany around the end of the 19th century, all of about one metric horsepower in size. The boiler horsepower equals 9809.5 watts and it was used for rating steam boilers and is equivalent to 34.5 pounds of water evaporated per hour at 212 degrees Fahrenheit. One horsepower for rating electric motors is equal to 746 watts, one horsepower for rating Continental European electric motors is equal to 735 watts. Continental European electric motors used to have dual ratings, one British Royal Automobile Club horsepower can equal a range of values based on estimates of several engine dimensions. It is one of the tax horsepower systems adopted around Europe, the development of the steam engine provided a reason to compare the output of horses with that of the engines that could replace them. He had previously agreed to take royalties of one third of the savings in coal from the older Newcomen steam engines and this royalty scheme did not work with customers who did not have existing steam engines but used horses instead. Watt determined that a horse could turn a mill wheel 144 times in an hour, the wheel was 12 feet in radius, therefore, the horse travelled 2.4 × 2π ×12 feet in one minute. Watt judged that the horse could pull with a force of 180 pounds-force. So, P = W t = F d t =180 l b f ×2.4 ×2 π ×12 f t 1 m i n =32,572 f t ⋅ l b f m i n. Watt defined and calculated the horsepower as 32,572 ft·lbf/min, Watt determined that a pony could lift an average 220 lbf 100 ft per minute over a four-hour working shift. Watt then judged a horse was 50% more powerful than a pony, engineering in History recounts that John Smeaton initially estimated that a horse could produce 22,916 foot-pounds per minute
13.
Propeller
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A propeller is a type of fan that transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the blade, and a fluid is accelerated behind the blade. Their disadvantages are higher mechanical complexity and higher cost, the principle employed in using a screw propeller is used in sculling. It is part of the skill of propelling a Venetian gondola but was used in a less refined way in parts of Europe. For example, propelling a canoe with a paddle using a pitch stroke or side slipping a canoe with a scull involves a similar technique. In China, sculling, called lu, was used by the 3rd century AD. In sculling, a blade is moved through an arc. The innovation introduced with the propeller was the extension of that arc through more than 360° by attaching the blade to a rotating shaft. Propellers can have a blade, but in practice there are nearly always more than one so as to balance the forces involved. The origin of the screw propeller starts with Archimedes, who used a screw to lift water for irrigation and bailing boats and it was probably an application of spiral movement in space to a hollow segmented water-wheel used for irrigation by Egyptians for centuries. Leonardo da Vinci adopted the principle to drive his theoretical helicopter, in 1784, J. P. Paucton proposed a gyrocopter-like aircraft using similar screws for both lift and propulsion. At about the time, James Watt proposed using screws to propel boats. This was not his own invention, though, Toogood and Hays had patented it a century earlier, by 1827, Czech-Austrian inventor Josef Ressel had invented a screw propeller which had multiple blades fastened around a conical base. He had tested his propeller in February 1826 on a ship that was manually driven. He was successful in using his bronze screw propeller on an adapted steamboat and his ship Civetta with 48 gross register tons, reached a speed of about six knots. This was the first ship successfully driven by an Archimedes screw-type propeller, after a new steam engine had an accident his experiments were banned by the Austro-Hungarian police as dangerous. Josef Ressel was at the time a forestry inspector for the Austrian Empire, but before this he received an Austro-Hungarian patent for his propeller. This new method of propulsion was an improvement over the paddlewheel as it was not so affected by either ship motions or changes in draft as the burned coal
14.
Charles Algernon Parsons
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Sir Charles Algernon Parsons, OM, KCB, FRS, the son of a member of the Irish peerage, was an Anglo-Irish engineer, best known for his invention of the compound steam turbine. He worked as an engineer on dynamo and turbine design, and power generation and he also developed optical equipment, for searchlights and telescopes. Parsons was born in London into an Anglo-Irish family, youngest son of the famous astronomer William Parsons, the family seat is Birr Castle, County Offaly, Ireland, and the town of Birr was called Parsonstown, after the family, from 1620 to 1899. One of them later became, as Sir Robert Ball, Astronomer Royal for Ireland, Parsons then read mathematics at Trinity College, Dublin and St. Johns College, Cambridge, graduating from the latter in 1877 with a first-class honours degree. He developed an engine there in 1884 and immediately utilized the new engine to drive an electrical generator. In 1889, he founded C. A. Parsons and Company in Newcastle to produce turbo generators to his design, in the same year he set up the Newcastle and District Electric Lighting Company. In 1890, DisCo opened Forth Banks Power Station, the first power station in the world to generate electricity using turbo generators, in 1894 he regained certain patent rights from Clarke Chapman. Parsons was also interested in applications and founded the Parsons Marine Steam Turbine Company in Newcastle. The Turbinia moved at 34 knots, the fastest Royal Navy ships using other technologies reached 27 knots. Part of the improvement was attributable to the slender hull of the Turbinia. Today, Turbinia is housed in a gallery at the Discovery Museum. He was elected a Fellow of the Royal Society in June 1898 and received their Rumford Medal in 1902, their Copley Medal in 1928 and he was the president of the British Association for 1916–1919. He was knighted in 1911 and made a member of the Order of Merit in 1927, the Parsons turbine company survives in the Heaton area of Newcastle and is now part of Siemens, a German conglomerate. In 1925 Charles Parsons acquired the Grubb Telescope Company and renamed it Grubb Parsons and that company survived in the Newcastle area until 1985. Parsons was also known for inventing the Auxetophone, a compressed air gramophone. In 1883 Parsons married Katharine Bethell, the daughter of William F. Bethell and they had two children, Rachel Mary Parsons, and Algernon George Parsons, who was killed in action during World War I in 1918, aged 31. Charles Algernon Parsons died on 11 February 1931, on board the steamship Duchess of Richmond while on a cruise with his wife, the cause of death was given as neuritis. A memorial service was held at Westminster Abbey on 3 March 1931, Parsons was buried in the parish church of St Bartholomews in Kirkwhelpington in Northumberland
15.
Steam turbine
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A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Sir Charles Parsons in 1884, in 1551, Taqi al-Din in Ottoman Egypt described a steam turbine with the practical application of rotating a spit. Steam turbines were described by the Italian Giovanni Branca and John Wilkins in England. The devices described by Taqi al-Din and Wilkins are today known as steam jacks, in 1672 an impulse steam turbine driven car was designed by Ferdinand Verbiest. A more modern version of car was produced some time in the late 18th century by an unknown German mechanic. The modern steam turbine was invented in 1884 by Sir Charles Parsons, the invention of Parsons steam turbine made cheap and plentiful electricity possible and revolutionized marine transport and naval warfare. Parsons design was a reaction type and his patent was licensed and the turbine scaled-up shortly after by an American, George Westinghouse. The Parsons turbine also turned out to be easy to scale up. Parsons had the satisfaction of seeing his invention adopted for all major world power stations, a number of other variations of turbines have been developed that work effectively with steam. The de Laval turbine accelerated the steam to full speed before running it against a turbine blade, De Lavals impulse turbine is simpler, less expensive and does not need to be pressure-proof. It can operate with any pressure of steam, but is less efficient. He taught at the École des mines de Saint-Étienne for a decade until 1897, one of the founders of the modern theory of steam and gas turbines was Aurel Stodola, a Slovak physicist and engineer and professor at the Swiss Polytechnical Institute in Zurich. His work Die Dampfturbinen und ihre Aussichten als Wärmekraftmaschinen was published in Berlin in 1903, a further book Dampf und Gas-Turbinen was published in 1922. It was used in John Brown-engined merchant ships and warships, including liners, the present-day manufacturing industry for steam turbines is dominated by Chinese power equipment makers. Other manufacturers with minor market share include Bhel, Siemens, Alstom, GE, Doosan Škoda Power, Mitsubishi Heavy Industries, the consulting firm Frost & Sullivan projects that manufacturing of steam turbines will become more consolidated by 2020 as Chinese power manufacturers win increasing business outside of China. There are several classifications for modern steam turbines, Turbine blades are of two basic types, blades and nozzles. Blades move entirely due to the impact of steam on them and this results in a steam velocity drop and essentially no pressure drop as steam moves through the blades. A turbine composed of alternating with fixed nozzles is called an impulse turbine, Curtis turbine, Rateau turbine
16.
Knot (unit)
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The knot is a unit of speed equal to one nautical mile per hour, approximately 1.151 mph. The ISO Standard symbol for the knot is kn, the same symbol is preferred by the IEEE, kt is also common. The knot is a unit that is accepted for use with the SI. Etymologically, the term derives from counting the number of knots in the line that unspooled from the reel of a log in a specific time. 1 international knot =1 nautical mile per hour,1.852 kilometres per hour,0.514 metres per second,1.151 miles per hour,20.254 inches per second,1852 m is the length of the internationally agreed nautical mile. The US adopted the definition in 1954, having previously used the US nautical mile. The UK adopted the international nautical mile definition in 1970, having used the UK Admiralty nautical mile. The speeds of vessels relative to the fluids in which they travel are measured in knots, for consistency, the speeds of navigational fluids are also measured in knots. Thus, speed over the ground and rate of progress towards a distant point are given in knots. Until the mid-19th century, vessel speed at sea was measured using a chip log, the chip log was cast over the stern of the moving vessel and the line allowed to pay out. Knots placed at a distance of 8 fathoms -47 feet 3 inches from each other, passed through a sailors fingers, the knot count would be reported and used in the sailing masters dead reckoning and navigation. This method gives a value for the knot of 20.25 in/s, the difference from the modern definition is less than 0. 02%. On a chart of the North Atlantic, the scale varies by a factor of two from Florida to Greenland, a single graphic scale, of the sort on many maps, would therefore be useless on such a chart. Recent British Admiralty charts have a latitude scale down the middle to make this even easier, speed is sometimes incorrectly expressed as knots per hour, which is in fact a measure of acceleration. Prior to 1969, airworthiness standards for aircraft in the United States Federal Aviation Regulations specified that distances were to be in statute miles. In 1969, these standards were amended to specify that distances were to be in nautical miles. At 11000 m, an airspeed of 300 kn may correspond to a true airspeed of 500 kn in standard conditions. Beaufort scale Hull speed, which deals with theoretical estimates of maximum speed of displacement hulls Knot count Knotted cord Metre per second Orders of magnitude Rope Kemp
17.
Nautical mile
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A nautical mile is a unit of measurement defined as exactly 1852 meters. Historically, it was defined as one minute of latitude, which is equivalent to one sixtieth of a degree of latitude. Today it is an SI derived unit, being rounded to a number of meters. The derived unit of speed is the knot, defined as one mile per hour. The geographical mile is the length of one minute of longitude along the Equator, there is no internationally agreed symbol. M is used as the abbreviation for the mile by the International Hydrographic Organization and by the International Bureau of Weights. NM is used by the International Civil Aviation Organization, nm is used by the U. S. National Oceanic and Atmospheric Administration. Nmi is used by the Institute of Electrical and Electronics Engineers, the word mile is from the Latin word for a thousand paces, mīlia. In 1617 the Dutch scientist Snell assessed the circumference of the Earth at 24,630 Roman miles, around that time British mathematician Edmund Gunter improved navigational tools including a new quadrant to determine latitude at sea. He reasoned that the lines of latitude could be used as the basis for a unit of measurement for distance, as one degree is 1/360 of a circle, one minute of arc is 1/21600 of a circle. These sexagesimal units originated in Babylonian astronomy, Gunter used Snells circumference to define a nautical mile as 6,080 feet, the length of one minute of arc at 48 degrees latitude.3 metres. Other countries measure the minute of arc at 45 degrees latitude, in 1929, the international nautical mile was defined by the First International Extraordinary Hydrographic Conference in Monaco as 1,852 meters. Imperial units and United States customary units used a definition of the nautical mile based on the Clarke Spheroid, the United States nautical mile was defined as 6,080.20 feet based in the Mendenhall Order foot of 1893. It was abandoned in favour of the nautical mile in 1954.181 meters. It was abandoned in 1970 and, legally, references to the unit are now converted to 1,853 meters. Conversion of units Orders of magnitude
18.
14"/45 caliber gun
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They were installed aboard the United States Navys New York-class, Nevada-class, and Pennsylvania-class battleships as the primary armament for each battleship in the class. The gun also saw service in the British Royal Navy, where it was designated the BL14 inch gun Mk II, the design of the 14-inch/45 caliber dates to about 1910, and they entered service in 1914 aboard Texas, and then New York shortly after. At a 15 degree angle, the guns could fire a shell out to 23,000 yd, each individual gun weighed 140,670 lb without the breech and measured 642.5 in in length. Each of the original Mark 1 built-up guns consisted of a tube without liner, jacket, eight hoops, to compensate for the problem of gun drooping, four hoop-locking rings were added to the guns. The Mark 3 added three hoop locking rings and contained a slide, while the Mark 5 had five hoops total. Owing to the interchangeability of the guns, the battleships fitted with the 14-inch/45 caliber guns often had guns of various Marks installed on each turret. In the 1930s, the Mark 1,2,3, and 5 were upgraded to allow for increased charges and muzzle velocities, resulting in the Mark 8,9,10, and 12, respectively. All guns employed a Welin breech block and used a Smith-Asbury mechanism and these improvements enabled the guns to fire heavier 1,500 lb shells, and increasing the gun mount elevation to 30 degrees extended the range of the guns to 36,000 yd. New York bombarded North Africa during landings in 1942, Pennsylvania took part in the Aleutian Islands Campaign and Texas, due to the attack on Pearl Harbor, both Oklahoma and Arizona never fired their main batteries in anger. However, the 14-inch/45 caliber guns salvaged from the number 2 turret aboard Arizona were removed and installed aboard Nevada in the fall of 1944. The aft turrets from Arizona were moved to become United States Army Coast Artillery Corps Battery Arizona on the west coast of Oahu, eight US Navy standard 14-inch/45 caliber guns, complete with mountings, built by Bethlehem Steel, were supplied to the United Kingdom in World War I. They were mounted on Abercrombie-class monitors under the British service designation BL14 inch gun Mk II
19.
5"/51 caliber gun
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5/51 caliber guns initially served as the secondary battery of United States Navy battleships built from 1907 through the 1920s, also serving on other vessels. United States naval gun terminology indicates the gun fired a projectile 5-inch in diameter, the different marks of the gun were Marks 7,8,9,14, and 15. The built-up gun consisted of a tube, full-length jacket, and single hoop with side swing Welin breech block, some Marks included a tapered liner. A24.5 lb charge of smokeless powder gave a 50-pound projectile a velocity of 3,150 ft/s, range was 15,850 yards at the maximum elevation of 20 degrees. Useful life expectancy was 900 effective full charges per liner, the 5-inch/51 caliber gun was designed to engage destroyers, torpedo boats, and other surface targets. It entered service in 1911 as secondary armament on the Florida-class battleships, most of the remaining guns were moved to redesigned casemates during the 1927–1930 refits. A1939 Table of Organization and Equipment shows Marine defense battalions were equipped with six of these guns each, 5-inch/51 shore batteries were used with great effectiveness by the 1st Marine Defense Battalion during the Battle of Wake Island in December 1941. These were eventually replaced in the defense battalions by the 155 mm Long Tom gun, six Tambor-class submarines were rearmed with wet mount 5-inch/51 guns during World War II, taken from Barracuda-class submarines or spares for that class. This list may not be exhaustive and they were grouped into two-gun batteries unless otherwise noted. During World War I three of these formed part of the coastal defences of Scapa Flow. In World War II a small number of these guns entered British service on ships transferred under the Lend-Lease arrangement. Some of these guns were transferred to New Zealand and deployed ashore for coastal defence. S. Jack, Roberts, Stephen S. Register of Ships of the U. S. Navy, 1775-1990, american Seacoast Defenses, A Reference Guide, Third Edition. Naval Weapons of World War Two, the Ships and Aircraft of the U. S. Fleet. The Ships and Aircraft of the U. S. Fleet, naval Weapons of World War One. List of all US coastal forts and batteries at the Coast Defense Study Group, Inc. website FortWiki, lists most CONUS and Canadian forts
20.
3"/50 caliber gun
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For Army 3-inch gun see 3-inch M1918 gun The 3″/50 caliber gun in United States naval gun terminology indicates the gun fired a projectile 3 inches in diameter, and the barrel was 50 calibers long. Different guns of this caliber were used by the U. S. Navy and U. S. Coast Guard from 1890 through the 1990s on a variety of combatant and transport ship classes. The US Navys first 3″/50 caliber gun was a model with a projectile velocity of 2,100 feet per second. Low-angle mountings for this gun had a range of 7000 yards at the elevation of 15 degrees. The gun entered service around 1900 with the Bainbridge-class destroyers, and was fitted to Connecticut-class battleships. By World War II these guns were only on a few Coast Guard cutters. These guns fired the same 2,700 feet per second used by the following dual-purpose Marks. These were built-up guns with a tube, partial-length jacket, hoop, dual-purpose 3″/50 caliber guns first entered service in 1915 as a refit to USS Texas, and were subsequently mounted on many types of ships as the need for anti-aircraft protection was recognized. They also replaced the original low-angle 4/50 caliber guns on flush-deck Wickes and these dual-purpose guns were quick-firing, meaning that they used fixed ammunition, with powder case and projectile permanently attached, and handled as a single unit weighing 34 pounds. Maximum range was 14,600 yards at 45 degrees elevation, useful life expectancy was 4300 effective full charges per barrel. The 3/50 caliber gun Marks 17 and 18 was first used as a deck gun on R-class submarines launched in 1918-1919. At the time it was an improvement on the earlier 3/23 caliber gun, after using larger guns on many other submarines, the 3/50 caliber gun Mark 21 was specified as the standard deck gun on the Porpoise- through Gato-class submarines launched in 1935-1942. The small gun was chosen to remove the temptation to engage enemy vessels on the surface. The gun was mounted aft of the conning tower to reduce submerged drag. Wartime experience showed that larger guns were needed and this need was initially met by transferring 4/50 caliber guns from S-class submarines as they were shifted from combat to training roles from late 1942. Later, the 5/25 caliber gun, initially removed from battleships sunk or damaged in the attack on Pearl Harbor and later manufactured in a submarine version, post-war experimentation with an extended range variant was abandoned as shipboard surface-to-air missiles were developed. The United States Navy considered contemporary 5/38 caliber guns and 5″/54 caliber guns more effective against surface targets, the 3″/50 caliber gun was a semiautomatic anti-aircraft weapon with a power driven automatic loader. These monobloc 3″ guns were fitted to both single and twin mountings, the single was to be exchanged for a twin 40 mm antiaircraft gun mount and the twin for a quadruple 40 mm mount
21.
Anti-aircraft warfare
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Anti-aircraft warfare or counter-air defence is defined by NATO as all measures designed to nullify or reduce the effectiveness of hostile air action. They include ground-and air-based weapon systems, associated sensor systems, command and control arrangements and it may be used to protect naval, ground, and air forces in any location. However, for most countries the main effort has tended to be homeland defence, NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence as are initiatives to adapt air defence to the task of intercepting any projectile in flight, a surface-based air defence capability can also be deployed offensively to deny the use of airspace to an opponent. Until the 1950s, guns firing ballistic munitions ranging from 20 mm to 150 mm were the weapons, guided missiles then became dominant. The term air defence was probably first used by Britain when Air Defence of Great Britain was created as a Royal Air Force command in 1925. However, arrangements in the UK were also called anti-aircraft, abbreviated as AA, after the First World War it was sometimes prefixed by Light or Heavy to classify a type of gun or unit. Nicknames for anti-aircraft guns include AA, AAA or triple-A, an abbreviation of anti-aircraft artillery, ack-ack, NATO defines anti-aircraft warfare as measures taken to defend a maritime force against attacks by airborne weapons launched from aircraft, ships, submarines and land-based sites. In some armies the term All-Arms Air Defence is used for air defence by nonspecialist troops, other terms from the late 20th century include GBAD with related terms SHORAD and MANPADS. Anti-aircraft missiles are variously called surface-to-air missile, abbreviated and pronounced SAM, non-English terms for air defence include the German FlaK, whence English flak, and the Russian term Protivovozdushnaya oborona, a literal translation of anti-air defence, abbreviated as PVO. In Russian the AA systems are called zenitnye systems, in French, air defence is called DCA. The maximum distance at which a gun or missile can engage an aircraft is an important figure, however, many different definitions are used but unless the same definition is used, performance of different guns or missiles cannot be compared. For AA guns only the part of the trajectory can be usefully used. By the late 1930s the British definition was that height at which an approaching target at 400 mph can be engaged for 20 seconds before the gun reaches 70 degrees elevation. However, effective ceiling for heavy AA guns was affected by nonballistic factors, The maximum running time of the fuse, the capability of fire control instruments to determine target height at long range. The essence of air defence is to detect aircraft and destroy them. The critical issue is to hit a target moving in three-dimensional space, Air defence evolution covered the areas of sensors and technical fire control, weapons, and command and control. At the start of the 20th century these were very primitive or non-existent
22.
Torpedo tube
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A torpedo tube is a cylinder shaped device for launching torpedoes. There are two types of torpedo tube, underwater tubes fitted to submarines and some surface ships. Thus a submarine torpedo tube operates on the principle of an airlock, the diagram on the right illustrates the operation of a submarine torpedo tube. The diagram is somewhat simplified but does show the working of a torpedo launch. A torpedo tube has a number of interlocks for safety reasons. For example, an interlock prevents the door and muzzle door from opening at the same time. The submarine torpedo launch sequence is, in simplified form, Open the breech door in the torpedo room, load the torpedo into the tube. Hook up the connection and the torpedo power cable. Shut and lock the breech door, turn on power to the torpedo. A minimum amount of time is required for torpedo warmup, fire control programs are uploaded to the torpedo. This may be manually or automatically, from sea or from tanks. The tube must be vented during this process to allow for complete filling, Open the equalizing valve to equalize pressure in the tube with ambient sea pressure. If the tube is set up for Impulse Mode the slide valve will open with the muzzle door, if Swim Out Mode is selected, the slide valve remains closed. The slide valve allows water from the pump to enter the tube. Modern torpedoes have a safety mechanism that prevents activation of the torpedo unless the torpedo senses the required amount of G-force, the power cable is severed at launch. However, if a wire is used, it remains connected through a drum of wire in the tube. Torpedo propulsion systems vary but electric torpedoes swim out of the tube on their own and are of a smaller diameter,21 weapons with fuel-burning engines usually start outside of the tube. Once outside the tube the torpedo begins its run toward the target as programmed by the control system
23.
Belt armor
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Belt armor is a layer of heavy metal armor plated onto or within the outer hulls of warships, typically on battleships, battlecruisers and cruisers, and aircraft carriers. The belt armor is designed to prevent projectiles from penetrating to the heart of a warship, typically, the main armor belt covers the warship from its main deck down to some distance below the waterline. If, instead of forming the hull, the armor belt is built inside the hull, it is installed at a sloped angle for improved protection. Furthermore, the spaces around the main belt in some designs were filled with storage tanks that could contain fuel oil, seawater. The liquids in these tanks absorb or scatter much of the force of warheads. To deal with the leakage from the tanks and incoming seawater and this multilayer design is featured in the cross-sectional drawings of Tirpitz and King George V. In combat, a warship can be seriously damaged underwater not only by torpedoes, to improve protection against both shells and torpedoes, an air space can be added between the armor belt and the hull to increase the buoyancy of the warship. Some kinds of naval warships have belt armor thinner than actually necessary for protection against projectiles and this is common especially with battlecruisers, battleships, and aircraft carriers to reduce their weight, thus increasing their acceleration and speed. Another possible reason is to meet treaty restrictions on ship displacement, one such method is all-or-nothing armoring, where belt armor is stripped from areas deemed non-vital to the functioning of the ship in battle. Agility gained from such processes are an asset to offensive warships that seek to quickly bring their heavy striking power to the enemy. In carriers, the maneuverability is exploited when deploying and recovering aircraft, since planes take off and land most easily when flying into the wind, the aircraft carrier steams rapidly into the wind in both maneuvers, making take-off and landing safer and easier. S. Comparison of WW2 battleship armor schemes Torpedo belt Protected cruiser Armored cruiser
24.
Bulkhead (partition)
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A bulkhead is an upright wall within the hull of a ship or within the fuselage of an aeroplane. Other kinds of elements within a ship are decks and deckheads. The word bulki meant cargo in Old Norse, sometime in the 15th century sailors and builders in Europe realized that walls within a vessel would prevent cargo from shifting during passage. In shipbuilding, any vertical panel was called a head, so walls installed abeam in a vessels hull were called bulkheads. Now, the term applies to every vertical panel aboard a ship. Bulkhead partitions are considered to have been a feature of Chinese junks, song Dynasty author Zhu Yu wrote in his book of 1119 that the hulls of Chinese ships had a bulkhead build. The 5th-century book Garden of Strange Things by Liu Jingshu mentioned that a ship could allow water to enter the bottom without sinking, texts written by Western writers such as Marco Polo, Niccolò Da Conti, and Benjamin Franklin describe the bulkhead partitions of East Asian shipbuilding. Bulkhead partitions became widespread in Western shipbuilding during the early 19th century, a 19th century book on shipbuilding attributes the introduction of watertight bulkheads to Charles Wye Williams, known for his steamships. Some bulkheads and decks are fire-resistance rated to achieve compartmentalisation, a fire protection measure. On an aircraft, bulkheads divide the cabin into multiple areas, openings in fire-resistance rated bulkheads and decks must be firestopped to restore the fire-resistance ratings that would otherwise be compromised, if the openings were left unsealed. The authority having jurisdiction for such measures varies depending upon the flag of the ship, merchant vessels are typically subject to the regulations and inspections of the Coast Guards of the flag country. Combat ships are subject to the set out by the navy of the country that owns the ship. The term was applied to other vehicles, such as railroad cars, hopper cars, trams, automobiles, aircraft or spacecraft, as well as to containers, intermediate bulk containers. In some of these cases bulkheads are airtight to prevent air leakage or the spread of a fire, the term may also be used for the end walls of bulkhead flatcars. Mechanically, a partition or panel through which pass, or a connector designed to pass through a partition. In architecture the term is used to denote any boxed in beam or other downstand from a ceiling. Head strikes on these elements are commonplace hence in architecture any overhead downstand element comes to be referred to as a bulkhead
25.
Barbette
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Barbettes are several types of gun emplacement in terrestrial fortifications or on naval ships. In recent naval usage, a barbette is a circular armour support for a heavy gun turret. This evolved from earlier forms of gun protection that led to the pre-dreadnought. The former gives better angles of fire but less protection than the latter, the disappearing gun was a variation on the barbette gun, it consisted of a heavy gun on a carriage that would retract behind a parapet or into a gunpit for reloading. They were primarily used in coastal defences, but saw use in a handful of warships. The term is used for certain aircraft gun mounts. By the late 1880s, all three systems were replaced with a hybrid system that combined the benefits of both types. The heavily-armored vertical tube that supported the new gun mount was referred to as a barbette, american authors generally refer to such mounts simply as tail guns or tail gun turrets. The use of barbette mountings originated in ground fortifications, the term originally referred to a raised platform on a rampart for one or more guns, enabling them to be fired over a parapet. This gave rise to the phrase en barbette, which referred to a gun placed to fire over a parapet, rather than through an embrasure, while an en barbette emplacement offered wider arcs of fire, it also exposed the guns crew to greater danger from hostile fire. In addition, since the position would be higher than a casemate position—that is. Fortifications in the 19th century typically employed both casemate and barbette emplacements, the type was usually used for coastal defence guns. Later heavy coastal guns were protected in hybrid installation, with wide casemate with cantilevered overhead cover partially covering a barbette mount. Following the introduction of ironclad warships in the early 1860s, naval designers grappled with the problem of mounting guns in the most efficient way possible. The first generation of ironclads employed the same arrangement as the old ship of the line. This was particularly important to designers, since the tactic of ramming was revived following its successful employment at the decisive Austrian victory at the Battle of Lissa in 1866, ramming required a ship to steam directly at its opponent, which greatly increased the importance of end-on fire. Designers such as Cowper Phipps Coles and John Ericsson designed the first gun turrets in the 1860s, in the 1870s, designers began to experiment with an en barbette type of mounting. The barbette was a fixed armoured enclosure protecting the gun, the barbette could take the form of a circular or elongated ring of armour around the rotating gun mount over which the guns fired
26.
Gun turret
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A gun turret is a location from which weapons can be fired that affords protection, visibility, and some cone of fire. Rotating gun turrets have the protection, the weapon, and its crew rotate, when this meaning of the word turret started being used at the beginning of the 1860s, turrets were normally cylindrical. Barbettes were an alternative to turrets, with a barbette the protection was fixed, in the 1890s, armoured hoods were added to barbettes, these rotated with the platform. By the early 20th Century, these hoods were known as turrets, modern warships have gun-mountings described as turrets, though the protection on them is limited to protection from the weather. They may be manned or remotely controlled and are most often protected to some degree, the protection provided by the turret may be against battle damage, the weather conditions, general environment in which the weapon or its crew will be operating. A small turret, or sub-turret set on top of a one, is called a cupola. The term cupola is used for a rotating turret that carries a sighting device rather than weaponry. Before the development of large-calibre, long-range guns in the mid-19th century, firepower was provided by a large number of guns, each of which could traverse only in a limited arc. Additionally casemate mounts had to be recessed into the side of a vessel to afford a wide arc of fire, designs for a rotating gun turret date back to the late 18th century. The Lady Nancy proved a success and Coles patenting his rotating turret design after the war. Coless aim was to create a ship with the greatest possible all round arc of fire, the Admiralty accepted the principle of the turret gun as a useful innovation, and incorporated it into other new designs. Coles submitted a design for a ship having ten domed turrets each housing two large guns, the design was rejected as impractical, although the Admiralty remained interested in turret ships and instructed its own designers to create better designs. Coles enlisted the support of Prince Albert, who wrote to the first Lord of the Admiralty, in January 1862, the Admiralty agreed to construct a ship, the HMS Prince Albert which had four turrets and a low freeboard, intended only for coastal defence. While Coles designed the turrets the ship was the responsibility of the chief Constructor Isaac Watts, another ship using Coles turret designs, HMS Royal Sovereign, was completed in August 1864. Its existing broadside guns were replaced with four turrets on a flat deck, early ships like the Royal Sovereign had little sea-keeping qualities being limited to coastal waters. Sir Edward James Reed, went on to design and build HMS Monarch, laid down in 1866 and completed in June 1869, it carried two turrets, although the inclusion of a forecastle and poop prevented the turret guns firing fore and aft. The gun turret was independently invented by the Swedish inventor John Ericsson in America, Ericsson designed the USS Monitor in 1861, its most prominent feature being a large cylindrical gun turret mounted amidships above the low-freeboard upper hull, also called the raft. This extended well past the sides of the lower, more traditionally shaped hull, a small armoured pilot house was fitted on the upper deck towards the bow, however, its position prevented Monitor from firing her guns straight forward
27.
Conning tower
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A conning tower is a raised platform on a ship or submarine, often armored, from which an officer can conn the vessel, i. e. give directions to the helmsman. It is usually located as high on the ship as practical, to give the conning team good visibility of the entirety of the ship itself and of ocean conditions, the verb “conn” probably stems from the verb “conduct” rather than from another plausible precedent, the verb “control”. On surface ships, the tower was a feature of all battleships. Located at the front end of the superstructure, the tower was a heavily armored cylinder. At all other times than during battles, the ship would be navigated from the bridge instead, conning towers were used by the French on their floating batteries at the Battle of Kinburn. They were then fitted to the first ironclad the French battleship La Gloire, the first Royal Navy conning tower appeared on HMS Warrior which had 3 inches of armour. The King George V class, in contrast to the Nelson class had comparatively light conning tower protection with 4.5 inch sides,3 inch front and rear, and 2 inch roof and deck. The RNs analysis of World War I combat revealed that command personnel were unlikely to utilize an armoured conning tower, older RN battleships that were reconstructed with new superstructures, had their heavily armoured conning towers removed and replaced with much lighter structures. These new conning towers were placed much higher in the ship. Even in the United States Navy, battleship captains and admirals preferred to use the unarmoured bridge positions during combat. The USN had mixed opinions of the tower, pointing out that its weight, high above the ships center of gravity. Beginning in the late 1930s, as radar surpassed visual sighting as the method of detecting other ships, battleships began reducing or eliminating the conning tower. By the end of World War II, US ships were designed with expanded weather bridges enclosing the armored conning towers. With the demise of battleships after World War II, along with the advent of missiles and nuclear weapons during the Cold War, modern warships no longer feature conning towers. It should not be confused with the control room, which was directly below it in the main pressure hull, or the bridge. As improvements in technology allowed the periscopes to be made longer it became unnecessary to raise the station above the main pressure hull. The USS Triton was the last American submarine to have a conning tower, the additional conning tower pressure hull was eliminated and its functions were added to the command and control center. Thus it is incorrect to refer to the sail of a submarine as a conning tower
28.
Deck (ship)
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A deck is a permanent covering over a compartment or a hull of a ship. On a boat or ship, the primary or upper deck is the structure that forms the roof of the hull, strengthening it. Decks for some purposes have specific names, the main purpose of the upper or primary deck is structural, and only secondarily to provide weather-tightness and support people and equipment. The deck serves as the lid to the box girder which is the hull. It resists tension, compression, and racking forces, the decks scantling is usually the same as the topsides, or might be heavier if the deck is expected to carry heavier loads. The deck will be reinforced around deck fittings such as the capstan, cleats, on ships with more than one level, deck refers to the level itself. The actual floor surface is called the sole, the term refers to a structural member tying the ships frames or ribs together over the keel. In modern ships, the decks are usually numbered from the primary deck. So the first deck below the deck will be #2. Some merchant ships may alternatively designate decks below the deck, usually machinery spaces, by numbers. Ships may also call decks by common names, or may invent fanciful and romantic names for a deck or area of that specific ship. Equipment mounted on deck, such as the wheel, binnacle, fife rails. Eastern designs developed earlier, with efficient middle decks and minimalist fore, in vessels having more than one deck there are various naming conventions, numerically, alphabetically, etc. However, there are various common historical names and types of decks,01 level is the term used in naval services to refer to the deck above the main deck. The next higher decks are referred to as the 02 level, the 03 level, afterdeck an open deck area toward the stern-aft. Berth deck, A deck next below the gun deck, where the hammocks of the crew are slung, Boat deck, Especially on ships with sponsons, the deck area where lifeboats or the ships gig are stored. Boiler deck, The passenger deck above the vessels boilers, may also refer to the deck of a bridge. Flight deck, A deck from which aircraft take off or land, flush deck, Any continuous unbroken deck from stem to stern
29.
Battleship
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A battleship is a large armored warship with a main battery consisting of large caliber guns. During the late 19th and early 20th centuries the battleship was the most powerful type of warship, the word battleship was coined around 1794 and is a contraction of the phrase line-of-battle ship, the dominant wooden warship during the Age of Sail. The term came into use in the late 1880s to describe a type of ironclad warship. In 1906, the commissioning of HMS Dreadnought heralded a revolution in battleship design, subsequent battleship designs, influenced by HMS Dreadnought, were referred to as dreadnoughts. Battleships were a symbol of naval dominance and national might, the launch of Dreadnought in 1906 commenced a new naval arms race. Jutland was the largest naval battle and the only full-scale clash of battleships in the war, the Naval Treaties of the 1920s and 1930s limited the number of battleships, though technical innovation in battleship design continued. The value of the battleship has been questioned, even during their heyday, there were few of the decisive fleet battles that battleship proponents expected, and used to justify the vast resources spent on building battlefleets. Battleships were retained by the United States Navy into the Cold War for fire support purposes before being stricken from the U. S. Naval Vessel Register in the 2000s. A ship of the line was a large, unarmored wooden sailing ship which mounted a battery of up to 120 smoothbore guns, from 1794, the alternative term line of battle ship was contracted to battle ship or battleship. The sheer number of guns fired broadside meant a sail battleship could wreck any wooden enemy, holing her hull, knocking down masts, wrecking her rigging, and killing her crew. However, the range of the guns was as little as a few hundred yards. The first major change to the ship of the concept was the introduction of steam power as an auxiliary propulsion system. Steam power was introduced to the navy in the first half of the 19th century, initially for small craft. The French Navy introduced steam to the line of battle with the 90-gun Napoléon in 1850—the first true steam battleship, Napoléon was armed as a conventional ship-of-the-line, but her steam engines could give her a speed of 12 knots, regardless of the wind condition. This was a decisive advantage in a naval engagement. The introduction of steam accelerated the growth in size of battleships, the adoption of steam power was only one of a number of technological advances which revolutionized warship design in the 19th century. The ship of the line was overtaken by the ironclad, powered by steam, protected by metal armor, and armed with guns firing high-explosive shells. In the Crimean War, six ships and two frigates of the Russian Black Sea Fleet destroyed seven Turkish frigates and three corvettes with explosive shells at the Battle of Sinop in 1853
30.
United States Navy
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The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U. S. Navy is the largest, most capable navy in the world, the U. S. Navy has the worlds largest aircraft carrier fleet, with ten in service, two in the reserve fleet, and three new carriers under construction. The service has 323,792 personnel on duty and 108,515 in the Navy Reserve. It has 274 deployable combat vessels and more than 3,700 operational aircraft as of October 2016, the U. S. Navy traces its origins to the Continental Navy, which was established during the American Revolutionary War and was effectively disbanded as a separate entity shortly thereafter. It played a role in the American Civil War by blockading the Confederacy. It played the role in the World War II defeat of Imperial Japan. The 21st century U. S. Navy maintains a global presence, deploying in strength in such areas as the Western Pacific, the Mediterranean. The Navy is administratively managed by the Department of the Navy, the Department of the Navy is itself a division of the Department of Defense, which is headed by the Secretary of Defense. The Chief of Naval Operations is an admiral and the senior naval officer of the Department of the Navy. The CNO may not be the highest ranking officer in the armed forces if the Chairman or the Vice Chairman of the Joint Chiefs of Staff. The mission of the Navy is to maintain, train and equip combat-ready Naval forces capable of winning wars, deterring aggression, the United States Navy is a seaborne branch of the military of the United States. The Navys three primary areas of responsibility, The preparation of naval forces necessary for the prosecution of war. The development of aircraft, weapons, tactics, technique, organization, U. S. Navy training manuals state that the mission of the U. S. Armed Forces is to prepare and conduct prompt and sustained combat operations in support of the national interest, as part of that establishment, the U. S. Navys functions comprise sea control, power projection and nuclear deterrence, in addition to sealift duties. It follows then as certain as that night succeeds the day, that without a decisive naval force we can do nothing definitive, the Navy was rooted in the colonial seafaring tradition, which produced a large community of sailors, captains, and shipbuilders. In the early stages of the American Revolutionary War, Massachusetts had its own Massachusetts Naval Militia, the establishment of a national navy was an issue of debate among the members of the Second Continental Congress. Supporters argued that a navy would protect shipping, defend the coast, detractors countered that challenging the British Royal Navy, then the worlds preeminent naval power, was a foolish undertaking. Commander in Chief George Washington resolved the debate when he commissioned the ocean-going schooner USS Hannah to interdict British merchant ships, and reported the captures to the Congress
31.
World War I
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World War I, also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history and it was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved. The war drew in all the worlds great powers, assembled in two opposing alliances, the Allies versus the Central Powers of Germany and Austria-Hungary. These alliances were reorganised and expanded as more nations entered the war, Italy, Japan, the trigger for the war was the assassination of Archduke Franz Ferdinand of Austria, heir to the throne of Austria-Hungary, by Yugoslav nationalist Gavrilo Princip in Sarajevo on 28 June 1914. This set off a crisis when Austria-Hungary delivered an ultimatum to the Kingdom of Serbia. Within weeks, the powers were at war and the conflict soon spread around the world. On 25 July Russia began mobilisation and on 28 July, the Austro-Hungarians declared war on Serbia, Germany presented an ultimatum to Russia to demobilise, and when this was refused, declared war on Russia on 1 August. Germany then invaded neutral Belgium and Luxembourg before moving towards France, after the German march on Paris was halted, what became known as the Western Front settled into a battle of attrition, with a trench line that changed little until 1917. On the Eastern Front, the Russian army was successful against the Austro-Hungarians, in November 1914, the Ottoman Empire joined the Central Powers, opening fronts in the Caucasus, Mesopotamia and the Sinai. In 1915, Italy joined the Allies and Bulgaria joined the Central Powers, Romania joined the Allies in 1916, after a stunning German offensive along the Western Front in the spring of 1918, the Allies rallied and drove back the Germans in a series of successful offensives. By the end of the war or soon after, the German Empire, Russian Empire, Austro-Hungarian Empire, national borders were redrawn, with several independent nations restored or created, and Germanys colonies were parceled out among the victors. During the Paris Peace Conference of 1919, the Big Four imposed their terms in a series of treaties, the League of Nations was formed with the aim of preventing any repetition of such a conflict. This effort failed, and economic depression, renewed nationalism, weakened successor states, and feelings of humiliation eventually contributed to World War II. From the time of its start until the approach of World War II, at the time, it was also sometimes called the war to end war or the war to end all wars due to its then-unparalleled scale and devastation. In Canada, Macleans magazine in October 1914 wrote, Some wars name themselves, during the interwar period, the war was most often called the World War and the Great War in English-speaking countries. Will become the first world war in the sense of the word. These began in 1815, with the Holy Alliance between Prussia, Russia, and Austria, when Germany was united in 1871, Prussia became part of the new German nation. Soon after, in October 1873, German Chancellor Otto von Bismarck negotiated the League of the Three Emperors between the monarchs of Austria-Hungary, Russia and Germany
32.
USS Pennsylvania (BB-38)
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USS Pennsylvania was the lead ship of the Pennsylvania class of United States Navy super-dreadnought battleships. She was the third Navy ship named for the state of Pennsylvania and she was laid down on 27 October 1913, by the Newport News Shipbuilding and Dry Dock Company, Newport News, Virginia. She was launched on 16 March 1915, sponsored by Elizabeth Kolb of Philadelphia, upon commissioning, Pennsylvania was attached to the Atlantic Fleet. On 12 October 1916, she became flagship of Commander in Chief, Atlantic Fleet, in January 1917, Pennsylvania steamed for Fleet maneuvers in the Caribbean Sea. She returned to her base at Yorktown, Virginia, on 6 April and she did not sail to join the British Grand Fleet since she burned fuel oil rather than coal, and tankers could not be spared to carry additional fuel to the British Isles. In the light of this circumstance, only coal-burning battleships were selected for this mission, while at Yorktown, on 11 August 1917, Pennsylvania manned the rail and rendered honors as Mayflower, with President Woodrow Wilson aboard, stood in and anchored. At 12,15, President Wilson returned the call of Commander, Battle Force, on 2 December 1918, Pennsylvania steamed to anchor off Tompkinsville, New York. On 4 December, she got underway for Brest, France, at 11,00, the transport George Washington, flying the flag of the President of the United States, stood out with an escort of 10 destroyers. Pennsylvania manned the rail and fired a 21-gun salute and she took position ahead of George Washington as guide for the Presidents escort. Arriving in Brest on 13 December, the crew manned the rail, on 14 December, Pennsylvania departed for New York, arriving on 25 December. In February 1919, Pennsylvania steamed for Fleet maneuvers in the Caribbean Sea, while at New York on 30 June, Admiral Mayo was relieved as Commander in Chief, Atlantic Fleet, by Vice Admiral Henry B. Wilson, the first captain of the ship, at Tompkinsville on 8 July, Pennsylvania embarked Vice President Thomas R. Marshall, Cabinet Secretaries Daniels, Glass, Wilson, Baker, Lane, and Senator Champ Clark, and then put to sea. At 10,00, Oklahoma was sighted with George Washington flying the Presidents flag, Pennsylvania fired a presidential salute, then took position ahead of Oklahoma and steamed to New York, stopping en route to disembark her distinguished guests before proceeding to her berth. On 7 January 1920, she departed New York for Fleet maneuvers in the Caribbean Sea and she resumed a schedule of local training operations until 17 January 1921, when she departed New York for the Panama Canal. On 21 January, the Fleet sailed from Balboa, en route to Callao, Peru, departing on 2 February, Pennsylvania returned to Balboa on 14 February, and then conducted brief exercises while based at Guantanamo Bay, Cuba. Upon her return to Hampton Roads on 28 April, she rendered a 21-gun salute as she passed Mayflower, the Secretary of the Navy, the Chief of Naval Operations, and the Assistant Secretary of the Navy came aboard for a reception for the President of the United States. At 11,40, President Warren Harding came aboard and his flag was broken at the main mast, on 22 August 1922, Pennsylvania departed Lynnhaven Roads to join the Pacific Fleet. After a visit to Wellington, New Zealand, she returned to San Pedro on 26 September and she remained in the yard for nearly two years
33.
All or nothing (armor)
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All or nothing is a method of armoring battleships, which involves heavily armoring the areas most important to a ship while the rest of the ship receives significantly less armor. The all or nothing concept avoided light or moderate thicknesses of armor, armor was used in the greatest practicable thickness or not at all, compared to previous armoring systems, all or nothing ships had thicker armor covering a smaller proportion of the hull. The U. S. Navy adopted what was called all or nothing armor in the Standard-type battleships. All or nothing armor was adopted by other navies after the First World War. Traditionally, a warships armor system was designed both separate from, and after, the design layout, the design and location of various component subsystems were laid out and designed in a manner that presented the most efficient and economical utilization of the hull’s displacement. The result of this approach was that armorers were decorating a warship’s hull, interior compartments, taken collectively, the total weight of armor yielded by this absence of an overall plan for protection was in total, far greater than a realistic hull displacement could float. All or nothing was the design solution and that was made possible by dispensing with the large areas of relatively light armor, which had been used in previous battleship designs. The weight saved was used to strengthen the armor protecting the areas of the ship, and to design a more compact interior space, where more. The logic of the design was simple, If the ship was hit in vital areas, on the other hand, if the ship was hit in non-vital areas, it would most likely not result in the ships destruction. Save for the turrets, the hoists, the conning tower and part of the steering gear. By stripping away the armor from all parts of the ship. The propulsion plant, communications systems, weapons, ammunition stores, everything else resided outside this structure. The armored citadel can be visualized as a rectangular armored raft with sloped sides sitting within the hull of the ship. From the box, shafts known as barbettes would lead upwards to the main gun turrets. Through compartmentalization and the redundancy of key systems, any damage done to the ship outside this armored box would likely be survivable, as long as those systems within the box remained intact, the ship could continue to fight. To maximize the thickness of armor available for a weight it was desirable that the citadel be as small as possible. In some cases, the turrets had a layout, such as the Royal Navys Nelson class. The result of years of experience, these bands of armor were effective protection when ships fought at close range
34.
Capital ship
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The capital ships of a navy are its most important warships, they are generally the larger ships when compared to other warships in their respective fleet. A capital ship is generally a leading or a ship in a naval fleet. William S. Lind, in the book America Can Win, defines a capital ship as follows, These characteristics define a capital ship, if the ships are beaten. But if the rest of the navy is beaten, the ships can still operate. Another characteristic that defines capital ships is that their opponent is each other. The Mahanian doctrine was applied by the Imperial Japanese Navy, leading to its preventive move to attack Pearl Harbor. Four-deckers suffered in rough seas, and the lowest deck could seldom fire except in calm conditions, third rate,64 to 80 guns. Fourth rate,46 to 60 guns, frigates were ships of the fifth rate, sixth rates comprised small frigates and corvettes. Towards the end of the Napoleonic Wars and into the late 19th century, some larger and this applied mainly to ships resulting from the dreadnought revolution, dreadnought battleships and battlecruisers. In the 20th century, especially in World Wars I and II, typical capital ships would be battleships, all of the above ships were close to 20,000 tons displacement or heavier, with large caliber guns and heavy armor protection. Heavy cruisers, despite being important ships, were not considered capital ships, an exception to the above in World War II was the Deutschland-class cruiser. The Alaska-class cruisers, despite being oversized heavy cruisers and not true battleships/battlecruisers, were considered by some to be capital ships. In regard to design, however, the Kirov is simply a supersized guided-missile cruiser with nuclear propulsion. It took until late 1942 for aircraft carriers to be considered capital ships. The U. S. Navy was forced to rely primarily on its aircraft carriers after the attack on Pearl Harbor sank or damaged eight of its Pacific-fleet battleships. In the 21st century, the carrier is the last remaining capital ship, with capability defined in decks available and aircraft per deck, rather than in guns. Despite their significance to modern fleets, the U. S. Navy has never named aircraft carriers after U. S. states as was the practice when battleships were considered capital ships. Instead, U. S. state names are applied to nuclear submarines while Aircraft Carriers are named after famous Navy personel and presidents, such as Chester W. Nimitz
35.
Tennessee-class battleship
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The Tennessee class was a class of battleships of the United States Navy. The class comprised two ships, Tennessee and California, both ships were extensively rebuilt after being damaged during the attack on Pearl Harbor, and survived World War II to be scrapped shortly after. Tennessee and her sister ship California, already incorporating many of the innovations in the New Mexico class, were the first American battleships built to a hull design. Since Tennessees 14-inch turret guns could be elevated to 30 degrees—rather than to the 15 degrees of earlier battleships—her heavy guns could reach out an additional 10,000 yards. Because battleships were beginning to carry airplanes to spot long-range gunfire. These features distinguished the Big Five from the rest of the battleship force, in the attack on Pearl Harbor, Tennessee was damaged by two bombs and California was sunk by two torpedoes and two bombs. Both ships were reconstructed into essentially new vessels. The twin funnels were replaced by a single funnel faired into the superstructure tower, the Tennessees had a 624-foot overall length and a beam at the waterline of 97 feet. They displaced 32,600 long tons at load and 33,590 long tons at deep load and had a draft of 30.5 feet. They were designed with a bow to make them dryer in rough weather. However, also as in classes, the secondary battery was located in the upper hull. This would be remedied in the Colorado class which followed, the Tennessee class was part of the standard-type battleship concept of the U. S. Navy, a design concept which gave the Navy a homogeneous line of battle. The standard-type battleship concept included long-range gunnery, moderate speed of 21 knots, the other standard-type battleships were the Nevada, Pennsylvania, New Mexico, and Colorado classes. By the naval planning theory of the U. S. The theory, thus, was advancing on a target would force the enemys naval forces to come out, give battle. Conways All the Worlds Fighting Ships, 1906–1921, dictionary of American Naval Fighting Ships. Navy Department, Naval History & Heritage Command
36.
Colorado-class battleship
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The Colorado-class battleships were a group of four battleships built by the United States Navy after World War I. However, only three of the ships were completed, Colorado, Maryland, and West Virginia, the fourth, Washington, was over 75% completed when she was canceled under the terms of the Washington Naval Treaty in 1922. As such, the Colorado-class ships were the last and most powerful battleships built by the US Navy until the North Carolina class entered service on the eve of World War II. The Colorados were the group of Standard-type battleships, designed to have similar speed. Apart from an upgrade in striking power to eight 16-inch guns, the Colorados were also the last American capital ships built with four turrets and twin-mounted guns. The change to larger guns was prompted by the Japanese Nagato-class battleships, all three ships had extensive careers during World War II. Maryland and West Virginia were both present during the attack on Pearl Harbor on 7 December 1941, Maryland escaped relatively unscathed, West Virginia was sunk in the shallow waters of the harbor but subsequently raised and repaired. All three ships served as support ships during amphibious operations. Maryland and West Virginia were present at the last surface action between battleships, the Battle of Surigao Strait during the Battle of Leyte Gulf in October 1944, the three ships, put into the reserve fleet after the end of the war, were scrapped by the late 1950s. This weapon dominated the design of battleships between 1913 and 1916, just as the 14-inch gun had dictated designs from 1908 to 1910, for this reason, he restricted the Bureau of Ordnance to proceed no further than blueprints for the new gun as a hedge against foreign developments. He finally approved construction of gun in October 1912 and the weapon was test fired successfully in August 1914. Such a move meant an increase of 8,000 tons per ship, debate continued for the next three years. Each year, President Woodrow Wilsons secretary of the navy, Josephus Daniels, balked at the increase in cost. Daniels finally compromised with the 1917 design battleships by allowing their armament to be upgraded and this, however, was to be the only substantial change to be allowed. This similarity would carry over into the Lexington and South Dakota classes as the United States Navy increasingly standardized its capital ship designs. This was partly the result of experience, when over 250 destroyers. The U. S. Navy had done this by a process almost akin to the assembly line, since the Naval Act of 1916 meant the imminent construction of 16 battleships and six battlecruisers, it was necessary to streamline production to save time and labor. Nevertheless, while US battleships were standardized as much as possible, most of the changes in the Tennessees were incorporated prior to any of their keels being laid
37.
Fuel oil
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Fuel oil, is a fraction obtained from petroleum distillation, either as a distillate or a residue. In this sense, diesel is a type of fuel oil, Fuel oil is made of long hydrocarbon chains, particularly alkanes, cycloalkanes and aromatics. The term fuel oil is used in a stricter sense to refer only to the heaviest commercial fuel that can be obtained from crude oil, i. e. heavier than gasoline. In some countries, the fuel oil usually refers specifically to diesel fuel while in Australia. Although the following trends generally hold true, different organizations may have different numerical specifications for the six fuel grades, the boiling point and carbon chain length of the fuel increases with fuel oil number. Viscosity also increases with number, and the heaviest oil must be heated for it to flow, price usually decreases as the fuel number increases. Number 1 fuel oil is a distillate oil intended for vaporizing pot-type burners. It is the kerosene refinery cut that boils off immediately after the heavy naphtha cut used for gasoline, former names include, coal oil, stove oil and range oil. Number 2 fuel oil is a home heating oil. This fuel is known as Bunker A. Trucks and some cars use similar diesel fuel with a cetane number limit describing the quality of the fuel. Both are typically obtained from the gas oil cut. Gas oil refers to the use of this fraction in the late 19th. Number 3 fuel oil was an oil for burners requiring low-viscosity fuel. ASTM merged this grade into the number 2 specification, and the term has been used since the mid-20th century. Number 4 fuel oil is a heating oil for burner installations not equipped with preheaters. It may be obtained from the gas oil cut. Number 5 fuel oil is an industrial heating oil requiring preheating to 77–104 °C for proper atomization at the burners
38.
Paris Peace Conference, 1919
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It took place in Paris during 1919 and involved diplomats from more than 32 countries and nationalities. The main result was the Treaty of Versailles with Germany, which in section 231 laid the guilt for the war on the aggression of Germany and this provision proved humiliating for Germany and set the stage for the expensive reparations Germany was intended to pay. They met together informally 145 times and made all the major decisions, the conference opened on 18 January 1919. Key recommendations were folded into the Treaty of Versailles with Germany, the five major powers controlled the Conference. Amongst the Big Five, in practice Japan played a small role, the four met together informally 145 times and made all the major decisions, which in turn were ratified by other attendees. The open meetings of all the approved the decisions made by the Big Four. The conference came to an end on 21 January 1920 with the inaugural General Assembly of the League of Nations, the main result was the Treaty of Versailles, with Germany, which in section 231 laid the guilt for the war on the aggression of Germany and her allies. This provision proved humiliating for Germany and set the stage for very high reparations Germany was supposed to pay, republican Germany was not invited to attend the conference at Versailles. Representatives of White Russia were present, a central issue of the Conference was the disposition of the overseas colonies of Germany. The British dominions wanted their reward for their sacrifice, Australia wanted New Guinea, New Zealand wanted Samoa, and South Africa wanted South West Africa. Wilson wanted the League of Nations to administer all the German colonies until such time as they were ready for independence, Lloyd George realized he needed to support his dominions, and he proposed a compromise that there be three types of mandates. Mandates for the Turkish provinces were one category, they would be divided up between Britain and France, Wilson and the others finally went along with the solution. The dominions received Class C Mandates to the colonies they wanted, Japan obtained mandates over German possessions north of the equator. Wilson wanted no mandates for the United States, his top advisor Colonel House was deeply involved in awarding the others, Wilson was especially offended by Australian demands. He and Hughes had some clashes, with the most famous being, Wilson, But after all. Hughes, I represent sixty thousand dead, prior to Wilsons arrival in Europe in December 1918, no American president had ever visited Europe while in office. High hopes and expectations were placed on him to deliver what he had promised for the post-war era, in doing so, Wilson ultimately began to lead the foreign policy of the United States toward interventionism, a move strongly resisted in some domestic circles. Once Wilson arrived, however, he found rivalries, and conflicting claims previously submerged and he worked mostly trying to sway the direction that the French and British delegations were taking towards Germany and its allies in Europe, as well as the former Ottoman lands in the Middle East
39.
United States Pacific Fleet
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The United States Pacific Fleet is a Pacific Ocean theater-level component command of the United States Navy that provides naval forces to the United States Pacific Command. Fleet headquarters is at Pearl Harbor Naval Station, Hawaii, with large facilities at North Island. A Pacific Fleet was created in 1907 when the Asiatic Squadron, in 1910, the ships of the First Squadron were organized back into a separate Asiatic Fleet. The General Order 94 of 6 December 1922 organized the United States Fleet, until May 1940, the Battle Fleet was stationed on the west coast of the United States. During the summer of year, as part of the U. S. response to Japanese expansionism, it was instructed to take an advanced position at Pearl Harbor. Long term basing at Pearl Harbor was so strongly opposed by the commander, Admiral James O. Richardson, political considerations were thought sufficiently important that he was relieved by Admiral Husband E. Kimmel, who was in command at the time of the attack on Pearl Harbor. The Pacific Fleet was formally recreated on 1 February 1941, on that day General Order 143 split the United States Fleet into separate Atlantic, Pacific, and Asiatic Fleets. On 7 December, the Fleet consisted of the Battle Force, Scouting Force, Base Force, Amphibious Force, Cruiser Force, Destroyer Force, also in Hawaii was the Fourteenth Naval District, commanded by Rear Admiral Claude C. At the time of the attack on Pearl Harbor, Pennsylvania was in dry dock and Colorado was being refitted at Bremerton Navy Yard, arizona was mated with Nevada and Oklahoma at that time. Other components of the Battle Force included Aircraft, Battle Force, with Carrier Division One and Carrier Division Two, plus Cruiser Divisions 4,5, the Scouting Force included Cruiser Division Three, Cruiser Division Nine and Submarines, Scouting Force. The Amphibious Force was formally known as Commander, Amphibious Forces, One of PhibPacs subordinate commands during World War II was Transports, Amphibious Force, Pacific Fleet, or TransPhibPac. The commander of TransPhibPac was known as ComTransPhibPac, in December 1941, the fleet consisted of nine battleships, three aircraft carriers,12 heavy cruisers, eight light cruisers,50 destroyers,33 submarines, and 100 patrol bombers. This was approximately the strength at the time of the Japanese attack on Pearl Harbor. That day, the Japanese Combined Fleet carried out the attack on Pearl Harbor, Navy to rely primarily on aircraft carriers and submarines for many months afterward. More minor battles included the Battle of Dutch Harbor, the West Loch disaster occurred at Pearl Harbor on 21 May 1944. The Pacific Fleet took part in Operation Magic Carpet, the return of U. S. servicemen, after the end of the Second World War. The organization of the Pacific Fleet in January 1947 is shown in Hal M. Friedmans Arguing over the American Lake, Bureaucracy and Rivalry in the U. S. Pacific, the RIMPAC exercise series began in 1971. On 7 March 1984, the Secretaries of Transportation and Navy signed a Memorandum of Agreement which created the Maritime Defense Zones, the Pacific MDZ is an echelon three Navy command under the Commander U. S
40.
Fleet problem
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Fleet problem was the term used by the United States Navy to describe each of 21 large-scale naval exercises conducted between 1923 and 1940. They are labeled with Roman numerals, from Fleet Problem I through Fleet Problem XXI, a 22nd Fleet Problem exercise, scheduled for 1941, was canceled because of World War II. The fleet problems were once a year exercises in which U. S. naval forces would engage in mock battles. One or more of the forces would play the part of a European or Asian navy and they were the culmination of the Navys annual training maneuvers. Fleet Problem I was held in February and March 1923 and was staged off the coast of Panama, the attacking Black force, using battleships to represent aircraft carriers, tested the defenses of the Panama Canal. A single plane launched from Oklahoma—representing a carrier air group—dropped 10 miniature bombs, Fleet Problems II, III, and IV were held concurrently in January and February 1924 took place in the Caribbean and simulated actions that might occur in the Pacific. Fleet Problem II simulated the first leg of an advance across the Pacific. This exercise focused on a defense of the Panama Canal from the Caribbean side, the Blue force was defending the canal from an attack from the Caribbean by the Black force, operating from an advance base in the Azores. It was to practice amphibious landing techniques and the rapidity of transiting a fleet through the canal from the Pacific side. In the exercise, a Black force special operations action resulted in the sinking of Blue force battleship New York in the Culebra Cut which would have blocked the canal. This problem simulated the movement from a base in the western Pacific to the Japanese home islands—represented in that case by islands, cities. Fleet Problem V was held in March and April 1925 and simulated an attack on Hawaii, in addition, aircraft aboard the battleship Wyoming could not be launched for lack of a working catapult. Langleys positive performance helped speed the completion of aircraft carriers Lexington, one aspect of Fleet Problem V was conducted near Guadalupe Island off Baja California and involved attacking a lightly held position and refueling at sea. Held off the west coast of Central America in early 1926 and this fleet problem was held March 1927 and involved defense of the Panama Canal. The highlight of the exercise was Langley’s successful air raid on the Panama Canal, held in April 1928 between California and Hawaii and pitted Orange, a cruiser force from Pearl Harbor, versus Blue, the Battle Force. It also involved a search and anti-submarine operations. She successfully launched her strike on 26 January and, despite being three times later in the day, proved the versatility of a carrier-based fast task force. Held in 1930 in Caribbean waters and this time, however, Saratoga and Langley were disabled by a surprise attack from Lexington, showing how quickly air power could swing the balance in a naval action
41.
Attack on Pearl Harbor
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The attack, also known as the Battle of Pearl Harbor, led to the United States entry into World War II. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI, Japan intended the attack as a preventive action to keep the U. S. Pacific Fleet from interfering with military actions they planned in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States. Over the next seven hours there were coordinated Japanese attacks on the U. S. -held Philippines, Guam and Wake Island and on the British Empire in Malaya, Singapore, the attack commenced at 7,48 a. m. The base was attacked by 353 Imperial Japanese fighter planes, bombers, all eight U. S. Navy battleships were damaged, with four sunk. All but the USS Arizona were later raised, and six were returned to service, the Japanese also sank or damaged three cruisers, three destroyers, an anti-aircraft training ship, and one minelayer. 188 U. S. aircraft were destroyed,2,403 Americans were killed and 1,178 others were wounded. Important base installations such as the station, shipyard, maintenance. Japanese losses were light,29 aircraft and five midget submarines lost, one Japanese sailor, Kazuo Sakamaki, was captured. The surprise attack came as a shock to the American people. The following day, December 8, the United States declared war on Japan, the U. S. responded with a declaration of war against Germany and Italy. Domestic support for non-interventionism, which had been fading since the Fall of France in 1940, Roosevelt to proclaim December 7,1941, a date which will live in infamy. Because the attack happened without a declaration of war and without explicit warning, over the next decade, Japan continued to expand into China, leading to all-out war between those countries in 1937. Japan spent considerable effort trying to isolate China and achieve sufficient resource independence to attain victory on the mainland, from December 1937, events such as the Japanese attack on USS Panay, the Allison incident, and the Nanking Massacre swung public opinion in the West sharply against Japan. Fearing Japanese expansion, the United States, the United Kingdom, in 1940, Japan invaded French Indochina in an effort to control supplies reaching China. The United States halted shipments of airplanes, parts, machine tools, and aviation gasoline to Japan, an invasion of the Philippines was also considered necessary by Japanese war planners. War Plan Orange had envisioned defending the Philippines with a 40 and this was opposed by Douglas MacArthur, who felt that he would need a force ten times that size, and was never implemented. By 1941, U. S. planners anticipated abandonment of the Philippines at the outbreak of war and orders to that effect were given in late 1941 to Admiral Thomas Hart, commander of the Asiatic Fleet
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World War II
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World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the worlds countries—including all of the great powers—eventually forming two opposing alliances, the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. Marked by mass deaths of civilians, including the Holocaust and the bombing of industrial and population centres. These made World War II the deadliest conflict in human history, from late 1939 to early 1941, in a series of campaigns and treaties, Germany conquered or controlled much of continental Europe, and formed the Axis alliance with Italy and Japan. Under the Molotov–Ribbentrop Pact of August 1939, Germany and the Soviet Union partitioned and annexed territories of their European neighbours, Poland, Finland, Romania and the Baltic states. In December 1941, Japan attacked the United States and European colonies in the Pacific Ocean, and quickly conquered much of the Western Pacific. The Axis advance halted in 1942 when Japan lost the critical Battle of Midway, near Hawaii, in 1944, the Western Allies invaded German-occupied France, while the Soviet Union regained all of its territorial losses and invaded Germany and its allies. During 1944 and 1945 the Japanese suffered major reverses in mainland Asia in South Central China and Burma, while the Allies crippled the Japanese Navy, thus ended the war in Asia, cementing the total victory of the Allies. World War II altered the political alignment and social structure of the world, the United Nations was established to foster international co-operation and prevent future conflicts. The victorious great powers—the United States, the Soviet Union, China, the United Kingdom, the Soviet Union and the United States emerged as rival superpowers, setting the stage for the Cold War, which lasted for the next 46 years. Meanwhile, the influence of European great powers waned, while the decolonisation of Asia, most countries whose industries had been damaged moved towards economic recovery. Political integration, especially in Europe, emerged as an effort to end pre-war enmities, the start of the war in Europe is generally held to be 1 September 1939, beginning with the German invasion of Poland, Britain and France declared war on Germany two days later. The dates for the beginning of war in the Pacific include the start of the Second Sino-Japanese War on 7 July 1937, or even the Japanese invasion of Manchuria on 19 September 1931. Others follow the British historian A. J. P. Taylor, who held that the Sino-Japanese War and war in Europe and its colonies occurred simultaneously and this article uses the conventional dating. Other starting dates sometimes used for World War II include the Italian invasion of Abyssinia on 3 October 1935. The British historian Antony Beevor views the beginning of World War II as the Battles of Khalkhin Gol fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939, the exact date of the wars end is also not universally agreed upon. It was generally accepted at the time that the war ended with the armistice of 14 August 1945, rather than the formal surrender of Japan
43.
USS Arizona Memorial
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The attack on Pearl Harbor and the island of Oʻahu led to the United States direct involvement in World War II. The memorial, built in 1962, is visited by more than two people annually. Accessible only by boat, it straddles the sunken hull of the battleship without touching it, the battleships sunken remains were declared a National Historic Landmark on May 5,1989. The USS Arizona Memorial is one of sites in Hawaii. During and following the end of World War II, the Arizonas wrecked superstructure was removed, the Pacific War Memorial Commission was created in 1949 to build a permanent memorial in Hawaii. Admiral Arthur W. Radford, commander of the Pacific Fleet attached a flag pole to the main mast of the Arizona in 1950, in that same year a temporary memorial was built above the remaining portion of the deckhouse. Radford requested funds for a memorial in 1951 and 1952 but was denied because of budget constraints during the Korean War. The Navy placed the first permanent memorial, a basalt stone and plaque. President Dwight D. Eisenhower approved the creation of a National Memorial in 1958, enabling legislation required the memorial budgeted at US$500,000 be privately financed, however, $200,000 of the memorial cost was government subsidized. Some were eager to keep it a tribute to the sailors of the Arizona, the national memorial was designed by Honolulu architect Alfred Preis who was detained at Sand Island at the start of the war as an enemy of the country because of his Austrian birth. The United States Navy specified the memorial be in the form of a bridge floating above the ship, the 184-foot-long structure has two peaks at each end connected by a sag in the center of the structure. It represents the height of American pride before the war, the nations sudden depression after the attack, critics initially called the design a squashed milk carton. The overall effect is one of serenity, overtones of sadness have been omitted to permit the individual to contemplate his own personal responses. The national memorial has three parts, entry, assembly room, and shrine. The central assembly room features seven large windows on either wall and ceiling. The memorial also has an opening in the floor overlooking the sunken decks and it is from this opening that visitors can pay their respects by tossing flowers in honor of the fallen sailors. In the past, leis were tossed in the water, but because string from leis poses a hazard to sea life, one of the three 19, 585-pound anchors of the Arizona is displayed at the visitor centers entrance. One of the two bells is in the visitor center
44.
Dry dock
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A dry dock is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, and repair of ships, boats, the use of dry docks in China goes at least as far back the 10th century A. D. The upper works included several decks with cabins and saloons. After many years, their hulls decayed and needed repairs, so in the Hsi-Ning reign period a palace official Huang Huai-Hsin suggested a plan. A large basin was excavated at the end of the Chin-ming Lake capable of containing the dragon ships. Then so that the quickly filled with water, after which the ships were towed in above the beams. The the water was pumped out by wheels so that the ships rested quite in the air, when the repairs were complete, the water was let in again, so that the ships were afloat once more. The first English and oldest surviving dry dock still in use was commissioned by Henry VII of England at HMNB Portsmouth in 1495 and this dry dock currently holds the worlds oldest commissioned warship, HMS Victory. Possibly the earliest description of a floating dock comes from a small Italian book printed in Venice in 1560, called Descrittione dellartifitiosa machina. In the booklet, an unknown author asks for the privilege of using a new method for the salvaging of a ship and then proceeds to describe. The included woodcut shows a ship flanked by two large floating trestles, forming a roof above the vessel, the ship is pulled in an upright position by a number of ropes attached to the superstructure. The Alfredo da Silva Dry Dock, of the Lisnave Dockyards in Almada, Portugal, was the largest in the world until 2000, harland and Wolff Heavy Industries in Belfast, Northern Ireland, is the site of a large dry dock 556 by 93 metres. The massive cranes are named after the Biblical figures Samson and Goliath, Goliath stands 96 m tall, while Samson is taller at 106 m. The Saint-Nazaires Chantiers de lAtlantique owns one of the biggest in the world,1,200 by 60 metres, the largest graving dock of the Mediterranean as of 2009 is at the Hellenic Shipyards S. A. The largest roofed dry dock is at the German Meyer Werft Shipyard in Papenburg, Germany, it is 504 m long,125 m wide, Dry Dock 12 at Newport News Shipbuilding is 662 by 76 metres the largest dry dock in the USA. The largest floating-dock in North America named The Vigorous and it is operated Vigor Industries in Portland, OR, in the Swan Island industrial area along the Willamette River. The keel blocks as well as the block are placed on the floor of the dock in accordance with the docking plan of the ship. Routine use of dry docks is for the graving i. e. the cleaning, removal of barnacles and rust, some fine-tuning of the ships position can be done by divers while there is still some water left to manoeuvre it about
45.
Naval gunfire support
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Naval gunfire support is the use of naval artillery to provide fire support for amphibious assault and other troops operating within their range. NGFS is one of a number of disciplines encompassed by the term Naval Fires, modern naval gunfire support is one of the three main components of amphibious warfare assault operations support, along with aircraft and ship-launched Land-attack missiles. Shipborne guns have used against shore defences since the early days of naval warfare. NGFS is classified into two types, direct fire, where the ship has line of sight with the target, and indirect fire, an early use of shore bombardment was during the Siege of Calais in 1347 when Edward III of England deployed ships carrying Bombardes and other artillery. An early type of vessel designed for the purpose of shore bombardment was the Bomb vessel and these were small ships whose main armament was one or two large mortars, that fired explosive shells at a high angle. They were typically poor sailing craft that were of limited use outside their specialized role, however, small vessels armed with large mortars saw use as late as the American Civil War, when the Union Navy used them in several attacks on coastal fortifications. During the 18th century, another class of vessel known as Floating battery were devised for shore bombardment. An early use of them was by the French and Spanish during the Great Siege of Gibraltar, during the Napoleonic Wars, the Royal Navy commissioned several vessels of the Musquito-class floating battery and Firm-class floating battery. These carried either Naval long guns or carronades, Floating batteries were used by both the French and British during the Crimean War, and by both sides during the American Civil War. In the Aegean the enemy defences were fairly unsophisticated, however. Here, the fortresses outline tended to blend into the hillside making identification difficult, mobile howitzers on the plateau presented even greater problems, since these were higher still, and being completely shielded from view proved almost impervious to naval bombardment. For RN ships bombarding German targets along the Belgian Coast the situation was different from the autumn of 1915 until the enemy withdrawal in October 1918. For this role, the Royal Navy frequently made use of specially designed vessels known as monitors and they carried extremely heavy armament for their size, often a single turret from a decommissioned battleship. A broad beamed hull designed for stability, and a draft to allow close approach to the shore however made them slow vessels that were unsuitable for naval combat. Two Lord Clive-class monitors were fitted with BL18 inch Mk I naval guns, the Germans constructed an extensive, well-equipped and well-coordinated system of gun-batteries etc. to defend the coast—and especially the ports of Ostend and Zeebrugge. This was a significant advance, which basically established a firm foundation for Naval Bombardment as practiced by the RN. In 1939, therefore, the RN was quite prepared for this particular aspect of joint warfare. Battleships, cruisers and destroyers would pound shore installations, sometimes for days, in the hope of reducing fortifications, obsolete battleships unfit for combat against other ships were often used as floating gun platforms expressly for this purpose
46.
Battle of Leyte Gulf
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The Battle of Leyte Gulf is generally considered to be the largest naval battle of World War II and, by some criteria, possibly the largest naval battle in history. It was fought in waters near the Philippine islands of Leyte, Samar and Luzon, from 23–26 October 1944, between combined American and Australian forces and the Imperial Japanese Navy. The Imperial Japanese Navy mobilized nearly all of its major naval vessels in an attempt to defeat the Allied invasion but was repulsed by the U. S. Navys 3rd. The IJN failed to achieve its objective, suffered heavy losses. The majority of its surviving ships, deprived of fuel, remained in their bases for the rest of the Pacific War. It was the first battle in which Japanese aircraft carried out organized kamikaze attacks, by the time of the battle, Japan had fewer aircraft than the Allied forces had sea vessels, demonstrating the difference in power of the two sides at this point of the war. S. 5th Fleets Fast Carrier Task Force captured most of the Mariana Islands and this offensive breached Japans strategic inner defense ring and gave the Americans a base from which long-range Boeing B-29 Superfortress bombers could attack the Japanese home islands. The Japanese counterattacked in the Battle of the Philippine Sea, the U. S. Navy destroyed three Japanese aircraft carriers and approximately 600 Japanese aircraft, leaving the IJN with virtually no carrier-borne air power or any experienced pilots. For subsequent operations, Admiral Ernest J. U. S. Army General Douglas MacArthur championed an invasion of the Philippines, which also lay across the supply lines to Japan. Leaving the Philippines in Japanese hands would be a blow to American prestige and an affront to MacArthur. However, Nimitz and MacArthur initially had opposing plans, with Nimitzs plan centered on an invasion of Formosa, Formosa could also serve as a base for an invasion of mainland China, which MacArthur felt was unnecessary. Nimitz eventually changed his mind and agreed to MacArthurs plan and it was also estimated that an invasion of Formosa would require about 12 divisions of U. S. Army soldiers and Marines. It was eventually decided that MacArthurs forces would invade the island of Leyte in the central Philippines, amphibious forces and close naval support would be provided by the 7th Fleet, commanded by Vice Admiral Thomas C. The 7th Fleet at this time contained units of the U. S. Navy, the U. S. 3rd Fleet—commanded by Admiral William F. Halsey, Jr. with Task Force 38 as its main component—would provide more distant cover and support for the invasion. A fundamental defect in this plan was there would be no single American naval admiral in overall command, Kinkaid and his 7th Fleet fell under MacArthur as Supreme Allied Commander Southwest Pacific, whereas Halseys 3rd Fleet reported to Nimitz as C-in-C Pacific Ocean Areas. This lack of unity of command, along with failures in communication, was to produce a crisis, by coincidence, the Japanese plan, using three separate fleets, also lacked an overall commander. The American options were apparent to the IJN, the plans were for complex offensive operations committing nearly all available forces to a decisive battle, despite this substantially depleting Japans slender reserves of fuel oil. The Japanese command therefore put Shō-Gō2 into action, launching waves of air attacks against 3rd Fleets carriers, following the American invasion of the Philippines, the Japanese Navy made the transition to Shō-Gō1
47.
Torpedo
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Historically, it was called an automotive, automobile, locomotive or fish torpedo, colloquially called a fish. The term torpedo was originally employed for a variety of devices, from about 1900, torpedo has been used strictly to designate an underwater self-propelled weapon. Todays torpedoes can be divided into lightweight and heavyweight classes, and into straight-running, autonomous homers and they can be launched from a variety of platforms. The word torpedo comes from the name of a genus of rays in the order Torpediniformes. In naval usage, the American Robert Fulton introduced the name to refer to a gunpowder charge used by his French submarine Nautilus to demonstrate that it could sink warships. The concept of a torpedo existed many centuries before it was successfully developed. In 1275, Hasan al-Rammah described. an egg which moves itself, in modern language, a torpedo is an underwater self-propelled explosive, —but historically, the term also applied to primitive naval mines. These were used on an ad hoc basis during the modern period up to the late 19th century. An early submarine, the Turtle, attempted to lay a bomb with a fuse on the hull of HMS Eagle during the American Revolutionary War. In the early 1800s, the American inventor Robert Fulton, while in France and he coined the term torpedo in reference to the explosive charges he outfitted his submarine Nautilus. However, both the French and the Dutch governments were uninterested in the submarine, Fulton then concentrated on developing the torpedo independent of a submarine deployment. However, the British government refused to purchase the invention, stating they did not wish to introduce into naval warfare a system that would give advantage to weaker maritime nations. Fulton carried out a demonstration for the US government on 20 July 1807. Further development languished as Fulton focused on his steam-boat matters, during the War of 1812, torpedoes were employed in attempts to destroy British vessels and protect American harbors. In fact a submarine deployed torpedo was used in an attempt to destroy HMS Ramillies while in New Londons harbor. Hardy to warn the Americans to cease efforts with the use of any boat in this cruel and unheard-of warfare. Torpedoes were used by the Russian Empire during the Crimean War in 1855 against British warships in the Gulf of Finland and they used an early form of chemical detonator. During the American Civil War, the torpedo was used for what is today called a contact mine
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