1.
Korean War
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The Korean War began when North Korea invaded South Korea. The United Nations, with the United States as the principal force, China came to the aid of North Korea, and the Soviet Union gave some assistance. Korea was ruled by Japan from 1910 until the days of World War II. In August 1945, the Soviet Union declared war on Japan, as a result of an agreement with the United States, U. S. forces subsequently moved into the south. By 1948, as a product of the Cold War between the Soviet Union and the United States, Korea was split into two regions, with separate governments, both governments claimed to be the legitimate government of all of Korea, and neither side accepted the border as permanent. The conflict escalated into open warfare when North Korean forces—supported by the Soviet Union, on that day, the United Nations Security Council recognized this North Korean act as invasion and called for an immediate ceasefire. On 27 June, the Security Council adopted S/RES/83, Complaint of aggression upon the Republic of Korea and decided the formation, twenty-one countries of the United Nations eventually contributed to the UN force, with the United States providing 88% of the UNs military personnel. After the first two months of war, South Korean forces were on the point of defeat, forced back to the Pusan Perimeter, in September 1950, an amphibious UN counter-offensive was launched at Inchon, and cut off many North Korean troops. Those who escaped envelopment and capture were rapidly forced back north all the way to the border with China at the Yalu River, at this point, in October 1950, Chinese forces crossed the Yalu and entered the war. Chinese intervention triggered a retreat of UN forces which continued until mid-1951, after these reversals of fortune, which saw Seoul change hands four times, the last two years of fighting became a war of attrition, with the front line close to the 38th parallel. The war in the air, however, was never a stalemate, North Korea was subject to a massive bombing campaign. Jet fighters confronted each other in combat for the first time in history. The fighting ended on 27 July 1953, when an armistice was signed, the agreement created the Korean Demilitarized Zone to separate North and South Korea, and allowed the return of prisoners. However, no treaty has been signed, and the two Koreas are technically still at war. Periodic clashes, many of which are deadly, continue to the present, in the U. S. the war was initially described by President Harry S. Truman as a police action as it was an undeclared military action, conducted under the auspices of the United Nations. In South Korea, the war is referred to as 625 or the 6–2–5 Upheaval. In North Korea, the war is referred to as the Fatherland Liberation War or alternatively the Chosǒn War. In China, the war is called the War to Resist U. S
2.
New York Shipbuilding Corporation
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At its peak during World War II, NYSB was the largest and most productive shipyard in the world. It was founded in 1899 by Henry G. Morse, a noted in connection with bridge design and construction. The original plan was to build a shipyard on Staten Island, site selection specifically considered the needs of the planned application of bridge building practices of prefabrication and assembly line production of ships in covered ways. Construction of the plant began in July 1899 and was so rapid that the keel of the first ship was laid November 1900. That ship, contract number 1, was M. S. Dollar, later to be modified as an oil tanker and renamed J. M. Guffey. Two of the first contracts were for ships that were among the largest then being built in the United States, #5 for Mongolia. Morse died after securing contracts for 20 ships and he was followed as president by De Coursey May. R. Grace & Company and the Pacific Mail Steamship Company, New York Ships unusual covered ways produced everything from aircraft carriers, battleships, and luxury liners to barges and car floats. During World War I, New York Ship expanded rapidly to fill orders from the U. S. Navy and the Emergency Fleet Corporation. A critical shortage of housing led to the construction of Yorkship Village. Yorkship Village is now the Fairview section of the City of Camden, after World War II, a much-diminished New York Ship subsisted on a trickle of contracts from the United States Maritime Administration and the U. S. Navy. The yard launched its last civilian vessel in 1960, and its last naval vessel, the companys final completed submarine was USS Guardfish, which had been ordered in the early 1960s, but construction was halted from 1963 to 1965 because of the loss of the USS Thresher. Guardfish was commissioned in December 1967, in 1968, lacking new naval orders, NYS went bankrupt. USS Pogy, then under construction, was towed to Ingalls Shipbuilding in Pascagoula, Mississippi, the yards site is now part of the Port of Camden, and handles breakbulk cargo. Ships built by New York Ship include, Oil tankers Gulflight launched 1914, center of a diplomatic incident when torpedoed in World War I
3.
Service star
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The service star may also be referred to as a campaign star or battle star depending on which award is authorized the star and the manner in which the device is used for the award. Service stars, Campaign stars, and Battle stars are worn with one point of the star pointing up on the ribbon of a medal. A silver star is worn instead of five bronze stars, a service star is sometimes mistaken for a Bronze Star or Silver Star. The service star is similar to the gold and silver 5⁄16 Inch Stars which may be authorized to be worn on specific individual decorations of certain services to denote additional decorations. Service stars are authorized for the following United States expeditionary medals, Armed Forces Expeditionary Medal, Navy Expeditionary Medal, Service stars are also authorized for the Global War on Terrorism Expeditionary Medal effective February 9,2015 retroactive to September,11,2001. Each star represents a deployment in support of an approved GWOT operation, only one GWOT-EM is awarded for each operation. The five GWOT-EM approved operations by inclusive dates are, Enduring Freedom,11,2001 - TBD Iraqi Freedom, Mar.19,2003 - Aug.31, 2010Nomad Shadow, Nov.05,2007 - TBD New Dawn, Sep. 01,2010 - Dec.31,2011 Inherent Resolve, the bronze service star is also authorized for certain unit awards such as the Presidential Unit Citation to denote a second and subsequent award. The service ribbon itself indicates the first award, with a service star being added to indicate the second. If ever applicable, a service star is worn instead of five bronze stars. As a result, at least one star will be worn on the ribbon. However, though authorized for wear, no battle stars have been approved for wear, only a combatant commander can initiate a request for a battle star. The Chairman of the Joint Chiefs of Staff is the approving authority, only one award of the Global War on Terrorism Expeditionary Medal and one award of the Global War on Terrorism Service Medal may be authorized for any individual. The specific manner of wear and symbolism of the stars varied from medal to medal, for example, an American Campaign Medal with a bronze service star indicated the service member had participated in an antisubmarine campaign. On other medals, bronze service stars were used on the service ribbon for those recipients of medals in possession of authorized campaign claps for those medals. Similarly, during the Vietnam War and afterwards, the Battle Effectiveness Award took the place of receiving battle stars for superior battle efficiency in place of combat operations. Awards and decorations of the United States military United States military award devices 5/16 inch star Oak leaf cluster United States award regulations for World War II
4.
Independence-class aircraft carrier
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The Independence-class aircraft carriers were a class of light carriers built for the United States Navy that served during World War II. Adapted from the design for Cleveland-class light cruisers, this class of ship resulted from the interest of President Franklin D. Roosevelt in naval air power. With war looming, the former Assistant Secretary of the Navy noted no new aircraft carriers were expected to be completed before 1944. He proposed to some of the many cruisers then under construction to carriers. Undeterred, President Roosevelt ordered another study, on 25 October 1941, the Navys Bureau of Ships reported that aircraft carriers converted from cruiser hulls would be of lesser capability, but available much sooner. After the December 1941 attack on Pearl Harbor, the need for more carriers became urgent, the Navy accelerated construction of the 34,000 ton Essex-class aircraft carriers, but these large ships could not be finished quickly. So in January 1942, the Navy also ordered that a Cleveland-class light cruiser then under construction be completed instead as an aircraft carrier. It became the USS Belleau Wood, the first ship of the Independence-class, plans developed for this conversion showed much more promise than expected. Two more light cruisers were reordered as carriers in February, three more in March, and a three in June 1942. The Independence-class design had a short and narrow flight deck and hangar. The hangar, flight deck, and island represented a significant increase in the topside weight. To compensate for this, blisters were added to the original cruiser hull, Ships of this class carried a small air group - only about 30 aircraft. This was originally set to consist of nine fighters, nine bombers, and nine torpedo bombers. These were limited-capability ships, whose principal virtue was near-term availability and their limited size made for seakeeping difficulties in the many typhoons of the Pacific, and their small flight decks led to a relatively high aircraft accident rate. However, being based on a cruiser, they were fast ships. The cruiser hull and engineering allowed them the necessary to operate with the main fleet carrier task groups. Their names followed the US Navys policy of naming aircraft carriers after historic navy ships or historic battles, eight of these carriers participated in the Battle of the Philippine Sea in June 1944, which effectively ended Japans carrier air power. The light carriers provided 40 percent of the Fast Carrier Task Forces fighters and 36 percent of the torpedo bombers
5.
Bofors 40 mm gun
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The Bofors 40 mm gun, often referred to simply as the Bofors gun, is an anti-aircraft/multi-purpose autocannon designed in the 1930s by the Swedish arms manufacturer AB Bofors. It was one of the most popular medium-weight anti-aircraft systems during World War II, a small number of these weapons remain in service to this day, and saw action as late as the Gulf War. In the post-war era the original design was not suitable for action against jet powered aircraft, so Bofors introduced a new model of more power. In spite of sharing almost nothing with the design other than the calibre and the distinctive conical flash hider. Although not as popular as the original L/60 model, the L/70 remains in service to this day, especially as a weapon for light armored vehicles. Bofors itself has been part of BAE Systems AB since March 2005, the Swedish Navy purchased a number of 2 pounder Pom-Poms from Vickers as anti-aircraft guns in 1922. The Navy approached Bofors about the development of a capable replacement. Bofors signed a contract in late 1928, Bofors produced a gun that was a smaller version of a 57 mm semi-automatic gun developed as an anti-torpedo boat weapon in the late 19th century by Finspong. Their first test gun was a re-barreled Nordenfelt version of the Finspong gun, testing of this gun in 1929 demonstrated that a problem existed feeding the weapon in order to maintain a reasonable rate of fire. A mechanism that was enough to handle the stresses of moving the large round was too heavy to move quickly enough to fire rapidly. One attempt to solve this problem used zinc shell cases that burned up when fired and this proved to leave heavy zinc deposits in the barrel, and had to be abandoned. This seemed to be the solution they needed, improving firing rates to a level. During this period Krupp purchased a share of Bofors. Krupp engineers started the process of updating the Bofors factories to use equipment and metallurgy. The prototype was completed and fired in November 1931, and by the middle of the month it was firing strings of two and three rounds. Changes to the mechanism were all that remained, and by the end of the year it was operating at 130 rounds per minute. Continued development was needed to turn it into a suitable for production. Since acceptance trials had been passed the year before, this known as the 40 mm akan M/32
6.
Oerlikon 20 mm cannon
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The Oerlikon 20 mm cannon is a series of autocannons, based on an original German 20 mm Becker design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II, and many still in use today. During World War I, the German Reinhold Becker developed a 20 mm caliber cannon and this used a 20x70 RB cartridge and had a cyclic rate of fire of 300 rpm. It was used on a scale as an aircraft gun on Luftstreitkräfte warplanes. Because the Treaty of Versailles banned further production of weapons in Germany. SEMAG continued development of the weapon, and in 1924 had produced the SEMAG L, the Oerlikon firm, named after the Zürich suburb where it was based, then acquired all rights to the weapon, plus the manufacturing equipment and the employees of SEMAG. In 1927 the Oerlikon S was added to the product line. This fired a larger cartridge to achieve a muzzle velocity of 830 m/s, at the cost of increased weight. The purpose of development was to improve the performance of the gun as an anti-tank and anti-aircraft weapon. An improved version known as the 1S followed in 1930, three sizes of gun with their different ammunition and barrel length, but very similar mechanisms, continued to be developed in parallel. In 1930 Oerlikon reconsidered the application of its gun in aircraft and introduced the AF and AL, designed to be used in flexible mounts, the 15-round box magazine used by earlier versions of the gun was replaced by drum magazine holding 15 or 30 rounds. In 1935 it made an important step by introducing a series of guns designed to be mounted in or on the wings of fighter aircraft, designated with FF for Flügelfest meaning wing-mounted, these weapons were again available in the three sizes, with designations FF, FFL and FFS. The FF fired a larger cartridge than the AF, 20x72RB. The FF weighed 24 kg and achieved a velocity of 550 to 600 m/s with a rate of fire of 520 rpm. The FFL of 30 kg fired a projectile at a velocity of 675 m/s with a rate of fire of 500 rpm. And the FFS, which weighed 39 kg, delivered a high velocity of 830 m/s at a rate of fire of 470 rpm. Apart from changes to the design of the guns for wing-mounting and remote control, for the FF series drum sizes of 45,60,75 and 100 rounds were available, but most users chose the 60-round drum. The 1930s were a period of global re-armament, and a number of foreign firms took licenses for the Oerlikon family of aircraft cannon
7.
Light aircraft carrier
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A light aircraft carrier, or light fleet carrier, is an aircraft carrier that is smaller than the standard carriers of a navy. The precise definition of the type varies by country, light carriers typically have a complement of aircraft only one-half to two-thirds the size of a fleet carrier. In World War II, the United States Navy produced a number of light carriers by converting cruiser hulls. The Independence-class ships, however, had the virtue of being available at a time when available carrier decks had been reduced to Enterprise and Saratoga in the Pacific, in addition, unlike escort carriers, they had enough speed to take part in fleet actions with the larger carriers. Late in the war, a follow on design to the Independence-class, two vessels in this class—Saipan and Wright—were completed after the wars end. After very brief lives as carriers, the Saipans were converted to command, the British 1942 design light fleet carrier was a scaled-down version of their Illustrious-class fleet carrier. The design could be built in a yard with little or no experience of warship construction, although built to merchant standards, the design incorporated better watertight subdivision. Expected to have a lifetime of three years, the last of the design was taken out of service in 2001. The first eight were built as the Colossus but revisions upgrading the design to larger and heavier aircraft led to the remainder being the Majestic class. In the post-war period, the Royal Navy operated a force of ten Colossus class carriers including the two maintenance carriers, by 1939 HMS Hermes was being considered as equivalent to a light aircraft carrier, due to her small size and lack of armour. Currently five light carriers are in service. The newest light carriers are the Italian Cavour and the Spanish Juan Carlos I, aircraft Carriers of the World,1914 to the Present. Watts, Anthony J. Japanese Warships of World War II
8.
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
9.
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
10.
Cleveland-class cruiser
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The Cleveland class was a group of light cruisers built for the U. S. Navy during World War II, and were the most numerous class of light cruisers ever built. The Clevland-class was a development of the preceding Brooklyn-class, the ships were designed with the goal of increased cruising range, anti-aircraft armament, torpedo protection, etc. compared with earlier U. S. cruisers. To achieve this, the fifth 6 inch gun turret was omitted and this also gave room for the enlargement of the bridge spaces to accommodate the new combat information center and the necessary radars. However, the increase of light anti-aircraft artillery made the class top-heavy towards the end of World War II, to compensate for the weight increase, some ships had one catapult removed, also the range finders were removed from turret A. These two were called the Fargo class, of the 27 Cleveland-class cruisers that were commissioned, one was completed as a guided missile cruiser and five were later modified as Galveston and Providence-class guided missile cruisers. Two of each of the guided missile cruiser-classes had enlarged superstructures to serve as flagships, following the naming convention at the time, all the ships completed as cruisers were named for US cities and towns. The Cleveland-class cruisers served mainly in the Pacific Fleet during World War II, especially in the Fast Carrier Task Force, all of these warships, though worked heavily and damaged in some cases, survived the war. The Clevelands suffered from increasing stability problems as anti-aircraft armament and additional radar was added during the war, none were recommissioned for the Korean War, as they required a crew almost as large as the Baltimore-class ships, and those ships were reactivated instead. All non-converted ships were sold off from the fleet for scrapping beginning in 1959. The six that were completed as or converted into guided missile cruisers were reactivated during the 1950s, all, particularly the Talos-armed ships, suffered from greater stability problems than the original design due to the extra radar equipment and top weight. This problem was severe in Galveston, leading to its premature decommissioning in 1970. Oklahoma City and Little Rock had to have an amount of ballast. The last of these ships in service, Oklahoma City, was decommissioned in December 1979
11.
Light cruiser
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A light cruiser is a type of small- or medium-sized warship. The term is a shortening of the light armored cruiser, describing a small ship that carried armor in the same way as an armored cruiser. Prior to this smaller cruisers had been of the protected cruiser model, the first small steam-powered cruisers were built for the British Royal Navy with HMS Mercury launched in 1878. Such second and third class protected cruisers evolved, gradually becoming faster, better armed, germany took a lead in small cruiser design in the 1890s, building a class of fast cruisers—the Gazelle class—copied by other nations. Such vessels were powered by coal-fired boilers and reciprocating steam engines, the adoption of oil-fired water-tube boilers and steam turbine engines meant that older small cruisers rapidly became obsolete. Furthermore, new construction could not rely on the protection of coal bunkers, the British Bristol group of Town-class cruisers were a departure from previous designs, with turbine propulsion, mixed coal and oil firing and a 2-inch protective armoured belt as well as deck. Thus, by definition, they were armoured cruisers, despite displacing only 4,800 tons, the first true modern light cruisers were the Arethusa class which had all oil-firing and used lightweight destroyer-type machinery to make 29 knots. 1-inch to 5. 9-inch guns. Cruiser construction in Britain continued uninterrupted until Admiral Jacky Fishers appointment as First Sea Lord in 1904, the group of 21 Town-class cruisers begun in 1910 proved excellent in scouting in all types of weather and could carry enough fuel and ammunition to guard the shipping lanes. The Arethusa class, launched three years later, was also successful, British designers continued enlarging and refining subsequent cruiser designs throughout the war. The Germans built a number of cruisers in the belief that they were good multi-purpose vessels. However, the Germans were very late in adapting 5. 9-inch guns, with the Pillau and Wiesbaden-class cruisers the Germans followed the British example of heavier guns. Earlier German light cruisers were in competition with a series of British scout cruisers which had a speed of 25 knots. The Germans completed the last two of their Bremen-class cruisers in 1906 and 1907 and followed them up with four Königsberg-class and these last two classes, larger and faster than the Bremens, were armed the same and carried less deck armor. Other major powers concentrated on construction and built few cruisers. The United States, Italy, and Austria-Hungary each built only a handful of scout cruisers while Japan and Spain added a few based on British designs. The United States resumed building light cruisers in 1918, largely because the ships it then had in service had become obsolete, the first of these, the ten Omaha-class ships, displaced 7,050 tons and were armed with twelve 6-inch guns. Eight of these guns were mounted in casemates at the bow and stern. Fast and maneuverable, they were well-liked as seaboats despite being very wet in rough weather, the term light cruiser was given a definition by the London Naval Treaty of 1930
12.
Pearl Harbor
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Pearl Harbor is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base and it is also the headquarters of the United States Pacific Fleet. The U. S. government first obtained exclusive use of the inlet, the attack on Pearl Harbor by the Empire of Japan on December 7,1941, was the immediate cause of the United States entry into World War II. Pearl Harbor was originally a shallow embayment called Wai Momi or Puʻuloa by the Hawaiians. Puʻuloa was regarded as the home of the goddess, Kaʻahupahau. Making due allowance for legendary amplification, the estuary already had an outlet for its waters where the present gap is, during the early 19th century, Pearl Harbor was not used for large ships due to its shallow entrance. The interest of United States in the Hawaiian Islands grew as a result of its whaling, shipping and trading activity in the Pacific. As early as 1820, an Agent of the United States for Commerce and these commercial ties to the American continent were accompanied by the work of the American Board of Commissioners for Foreign Missions. American missionaries and their families became a part of the Hawaiian political body. Throughout the 1820s and 1830s, many American warships visited Honolulu, in most cases, the commanding officers carried letters from the U. S. Government giving advice on governmental affairs and of the relations of the island nation with foreign powers. In 1841, the newspaper Polynesian, printed in Honolulu, advocated that the U. S. establish a base in Hawaii for protection of American citizens engaged in the whaling industry. The British Hawaiian Minister of Foreign Affairs Robert Crichton Wyllie, remarked in 1840 that and my opinion is that the tide of events rushes on to annexation to the United States. In 1865, the North Pacific Squadron was formed to embrace the western coast, lackawanna in the following year was assigned to cruise among the islands, a locality of great and increasing interest and importance. This vessel surveyed the Northwestern Hawaiian Islands toward Japan, as a result, the United States claimed Midway Island. The Secretary of the Navy was able to write in his report of 1868. This increased activity caused the permanent assignment of at least one warship to Hawaiian waters and it also praised Midway Island as possessing a harbor surpassing Honolulus. In the following year, Congress approved an appropriation of $50,000 on March 1,1869, after 1868, when the Commander of the Pacific Fleet visited the islands to look after American interests, naval officers played an important role in internal affairs. They served as arbitrators in disputes, negotiators of trade agreements and defenders of law
13.
Aircraft carrier
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An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Aircraft carriers are expensive to build and are critical assets, there is no single definition of an aircraft carrier, and modern navies use several variants of the type. These variants are sometimes categorized as sub-types of aircraft carriers, Aircraft carriers may be classified according to the type of aircraft they carry and their operational assignments. Admiral Sir Mark Stanhope, former head of the Royal Navy, has said, To put it simply, as of April 2017, there are 37 active aircraft carriers in the world within twelve navies. The United States Navy has 10 large nuclear-powered fleet carriers, the largest carriers in the world, the Royal Navy of Great Britain is building two 280-m / 920-ft carriers, the Queen Elizabeth, and the Prince of Wales scheduled to go into service in 2020-2023. These are the largest carriers capable of fast speeds, by comparison, escort carriers were developed to provide defense for convoys of ships. They were smaller and slower with lower numbers of aircraft carried, most were built from mercantile hulls or, in the case of merchant aircraft carriers, were bulk cargo ships with a flight deck added on top. Light aircraft carriers were fast enough to operate with the main fleet, three nations currently operate carriers of this type, ten by the United States, and one each by France and Brazil for a total of twelve in service. Short take-off but arrested-recovery, these carriers are generally limited to carrying lighter fixed-wing aircraft with more limited payloads, currently, Russia, China, and India possess commissioned carriers of this type. Short take-off vertical-landing, limited to carrying STOVL aircraft and this type of aircraft carrier is currently in service with Italy. Some also count the nine US amphibious assault ships in their secondary light carrier role boosting the total to thirteen. Helicopter carrier, Helicopter carriers have an appearance to other aircraft carriers. Some are designed for addition of, or may include, a ski jump ramp allowing for STOVL operations or may have a ski jump installed before retirement of STOVL aircraft. In the past, some conventional carriers were converted and called commando carriers by the Royal Navy, some helicopter carriers with a resistant flight surface can operate STOVL jets. Currently the majority of carriers, but not all, are classified as amphibious assault ships. The US has nine of this type, France and Japan three, Australia two, the UK one, the Republic of Korea one and Spain one, the US and Spains amphibious assault ships operate STOVL jets in normal deployment. Supercarrier Fleet carrier Light aircraft carrier Escort carrier Several systems of identification symbol for aircraft carriers, two months later, on 18 January 1911, Ely landed his Curtiss pusher airplane on a platform on the armored cruiser USS Pennsylvania anchored in San Francisco Bay
14.
Tonne
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The SI symbol for the tonne is t, adopted at the same time as the unit itself in 1879. Its use is also official, for the metric ton, within the United States, having been adopted by the US National Institute of Standards and it is a symbol, not an abbreviation, and should not be followed by a period. Informal and non-approved symbols or abbreviations include T, mT, MT, in French and all English-speaking countries that are predominantly metric, tonne is the correct spelling. Before metrication in the UK the unit used for most purposes was the Imperial ton of 2,240 pounds avoirdupois, equivalent to 1,016 kg, differing by just 1. 6% from the tonne. Ton and tonne are both derived from a Germanic word in use in the North Sea area since the Middle Ages to designate a large cask. A full tun, standing about a high, could easily weigh a tonne. An English tun of wine weighs roughly a tonne,954 kg if full of water, in the United States, the unit was originally referred to using the French words millier or tonneau, but these terms are now obsolete. The Imperial and US customary units comparable to the tonne are both spelled ton in English, though they differ in mass, one tonne is equivalent to, Metric/SI,1 megagram. Equal to 1000000 grams or 1000 kilograms, megagram, Mg, is the official SI unit. Mg is distinct from mg, milligram, pounds, Exactly 1000/0. 453 592 37 lb, or approximately 2204.622622 lb. US/Short tons, Exactly 1/0. 907 184 74 short tons, or approximately 1.102311311 ST. One short ton is exactly 0.90718474 t, imperial/Long tons, Exactly 1/1. 016 046 9088 long tons, or approximately 0.9842065276 LT. One long ton is exactly 1.0160469088 t, for multiples of the tonne, it is more usual to speak of thousands or millions of tonnes. Kilotonne, megatonne, and gigatonne are more used for the energy of nuclear explosions and other events. When used in context, there is little need to distinguish between metric and other tons, and the unit is spelt either as ton or tonne with the relevant prefix attached. *The equivalent units columns use the short scale large-number naming system used in most English-language countries. †Values in the equivalent short and long tons columns are rounded to five significant figures, ǂThough non-standard, the symbol kt is also sometimes used for knot, a unit of speed for sea-going vessels, and should not be confused with kilotonne. A metric ton unit can mean 10 kilograms within metal trading and it traditionally referred to a metric ton of ore containing 1% of metal. In the case of uranium, the acronym MTU is sometimes considered to be metric ton of uranium, in the petroleum industry the tonne of oil equivalent is a unit of energy, the amount of energy released by burning one tonne of crude oil, approximately 42 GJ
15.
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
16.
Length overall
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Length overall, often abbreviated as is the maximum length of a vessels hull measured parallel to the waterline. This length is important while docking the ship and it is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth. LOA is usually measured on the hull alone, for sailing ships, this may exclude the bowsprit and other fittings added to the hull. This is how some racing boats and tall ships use the term LOA, however, other sources may include bowsprits in LOA. Sparred length, Total length including bowsprit, Mooring length and LOA including bowsprit are other expressions that might indicate the length of a sailing ship. Often used to distinguish between the length of a vessel including projections from the length of the hull itself, the Length on Deck or LOD is often reported and this is especially useful for smaller sailing vessels, as their LOA can be significantly different from their LOD. In ISO8666 for small boats, there is a definition of LOH and this may be shorter than a vessels LOA, because it excludes other parts attached to the hull, such as bowsprits. Another measure of length is LWL which is useful in assessing a vessels performance. In some cases LWL can be shorter than LOA. Overall length in cartridges The National Register of Historic Vessels Length between perpendiculars Hayler, William B, keever, John M. American Merchant Seamans Manual. Turpin, Edward A. McEwen, William A
17.
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
18.
Beam (nautical)
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The beam of a ship is its width at the widest point as measured at the ships nominal waterline. The beam is a bearing projected at right-angles from the fore and aft line, Beam may also be used to define the maximum width of a ships hull, or maximum width plus superstructure overhangs. Typical length-to-beam ratios for small sailboats are from 2,1 to 5,1, large ships have widely varying beam ratios, some as large as 20,1. Rowing shells designed for racing may have length to beam ratios as high as 30,1. The beam of many vessels can be calculated using the following formula. Some examples, For a standard 27 ft yacht, the root of 27 is 3,3 squared is 9 plus 1 =10. The beam of many 27 ft monohulls is 10 ft, for a Volvo Open 70 yacht,70.5 to the power of 2/3 =17 plus 1 =18. The beam is often around 18 ft, for a 741 ft long ship, the cube root is 9, and 9 squared is 81, plus 1. The beam will usually be around 82 ft, e. g. Seawaymax, as catamarans have more than one hull, there is a different beam calculation for this kind of vessel. BOC stands for Beam On Centerline and this term in typically used in conjunction with LOA. The ratio of LOA/BOC is used to estimate the stability of multihull vessels, the lower the ratio the greater the boats stability. The BOC for vessels is measured as follows, For a catamaran, carlin – similar to a beam, except running in a fore and aft direction. Keever, John M. American Merchant Seamans Manual, turpin, Edward A. McEwen, William A
19.
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
20.
Armour
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Personal armour is used to protect soldiers and war animals. Vehicle armour is used on warships and armoured fighting vehicles, a second use of the term armour describes armoured forces, armoured weapons, and their role in combat. After the evolution of armoured warfare, mechanised infantry and their weapons came to be referred to collectively as armour, the word armour began to appear in the Middle Ages as a derivative of Old French. It is dated from 1297 as a mail, defensive covering worn in combat, the word originates from the Old French armure, itself derived from the Latin armatura meaning arms and/or equipment, with the root armare meaning arms or gear. Armour has been used throughout recorded history and it has been made from a variety of materials, beginning with rudimentary leather protection and evolving through mail and metal plate into todays modern composites. For much of history the manufacture of metal personal armour has dominated the technology. Its production was influential in the revolution, and furthered commercial development of metallurgy. Armour was the single most influential factor in the development of firearms, significant factors in the development of armour include the economic and technological necessities of its production. For instance, plate armour first appeared in Medieval Europe when water-powered trip hammers made the formation of plates faster and cheaper, also, modern militaries usually do not equip their forces with the best armour available because it would be prohibitively expensive. The samurai warriors of feudal Japan utilised many types of armour for hundreds of years up to the 19th century, Japanese lamellar armour passed through Korea and reached Japan around the 5th century. These early Japanese lamellar armours took the form of a sleeveless jacket, armour did not always cover all of the body, sometimes no more than a helmet and leg plates were worn. The rest of the body was protected by means of a large shield. Examples of armies equipping their troops in this fashion were the Aztecs, in East Asia many types of armour were commonly used at different times by various cultures including, scale armour, lamellar armour, laminar armour, plated mail, mail, plate armour and brigandine. Around the dynastic Tang, Song, and early Ming Period, cuirasses and plates were also used, the Chinese, during that time used partial plates for important body parts instead of covering their whole body since too much plate armour hinders their martial arts movement. The other body parts were covered in cloth, leather, lamellar, in pre-Qin dynasty times, leather armour was made out of various animals, with more exotic ones such as the rhinoceros. Mail, sometimes called chainmail, made of interlocking iron rings is believed to have first appeared some time after 300 BC and its invention is credited to the Celts, the Romans were thought to have adopted their design. Gradually, small plates or discs of iron were added to the mail to protect vulnerable areas. Hardened leather and splinted construction were used for arm and leg pieces, the coat of plates was developed, an armour made of large plates sewn inside a textile or leather coat
21.
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
22.
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
23.
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
24.
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
25.
Boiler
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A boiler is a closed vessel in which water or other fluid is heated. The fluid does not necessarily boil, the heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central heating, boiler-based power generation, cooking, and sanitation. The pressure vessel of a boiler is usually made of steel, stainless steel, especially of the austenitic types, is not used in wetted parts of boilers due to corrosion and stress corrosion cracking. In live steam models, copper or brass is used because it is more easily fabricated in smaller size boilers. For much of the Victorian age of steam, the material used for boilermaking was the highest grade of wrought iron. In the 20th century, design practice instead moved towards the use of steel, which is stronger and cheaper, with welded construction, which is quicker and requires less labour. It should be noted, however, that wrought iron boilers corrode far slower than their steel counterparts. This makes the longevity of older wrought-iron boilers far superior to those of welded steel boilers, cast iron may be used for the heating vessel of domestic water heaters. Although such heaters are usually termed boilers in some countries, their purpose is usually to produce hot water, not steam, the brittleness of cast iron makes it impractical for high-pressure steam boilers. The source of heat for a boiler is combustion of any of several fuels, such as wood, coal, oil, electric steam boilers use resistance- or immersion-type heating elements. Nuclear fission is used as a heat source for generating steam, either directly or, in most cases. Heat recovery steam generators use the heat rejected from other such as gas turbine. 18th century Haycock boilers generally produced and stored large volumes of very low-pressure steam and these could burn wood or most often, coal. Flued boiler with one or two large flues—an early type or forerunner of fire-tube boiler, fire-tube boiler, Here, water partially fills a boiler barrel with a small volume left above to accommodate the steam. This is the type of boiler used in nearly all steam locomotives, the heat source is inside a furnace or firebox that has to be kept permanently surrounded by the water in order to maintain the temperature of the heating surface below the boiling point. Fire-tube boilers usually have a low rate of steam production. Fire-tube boilers mostly burn solid fuels, but are adaptable to those of the liquid or gas variety. Water-tube boiler, In this type, tubes filled with water are arranged inside a furnace in a number of possible configurations and this type generally gives high steam production rates, but less storage capacity than the above
26.
General Electric
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General Electric, often abbreviated as GE, is an American multinational conglomerate corporation incorporated in New York and headquartered in Boston, Massachusetts. In 2011, GE ranked among the Fortune 500 as the 68th-largest firm in the U. S. by gross revenue, as of 2012, the company was listed the fourth-largest in the world among the Forbes Global 2000, further metrics being taken into account. The Nobel Prize has twice been awarded to employees of General Electric, Irving Langmuir in 1932, on January 13,2016, it was announced that GE will be moving its corporate headquarters from Fairfield, Connecticut to the South Boston Waterfront neighborhood of Boston, Massachusetts. The first group of workers arrived in the summer of 2016, morgan and the Vanderbilt family for Edisons lighting experiments. The new company also acquired Sprague Electric Railway & Motor Company in the same year, both plants continue to operate under the GE banner to this day. The company was incorporated in New York, with the Schenectady plant used as headquarters for years thereafter. Around the same time, General Electrics Canadian counterpart, Canadian General Electric, was formed, in 1896, General Electric was one of the original 12 companies listed on the newly formed Dow Jones Industrial Average. After 120 years, it is the one of the original companies still listed on the Dow index. In 1911, General Electric absorbed the National Electric Lamp Association into its lighting business, GE established its lighting division headquarters at Nela Park in East Cleveland, Ohio. Nela Park is still the headquarters for GEs lighting business, owen D. Young, through GE, founded the Radio Corporation of America in 1919 to further international radio. GE used RCA as its retail arm for radio sales from 1919, in 1927, Ernst Alexanderson of GE made the first demonstration of his television broadcasts at his General Electric Realty Plot home at 1132 Adams Rd, Schenectady, NY. The sound was broadcast on GEs WGY, experimental television station W2XAD evolved into station WRGB which—along with WGY and WGFM —was owned and operated by General Electric until 1983. GEs history of working with turbines in the field gave them the engineering know-how to move into the new field of aircraft turbosuperchargers. Led by Sanford Alexander Moss, GE introduced the first superchargers during World War I, superchargers became indispensable in the years immediately prior to World War II, and GE was the world leader in exhaust-driven supercharging when the war started. This experience, in turn, made GE a natural selection to develop the Whittle W.1 jet engine that was demonstrated in the United States in 1941, GE ranked ninth among United States corporations in the value of wartime production contracts. In 2002, GE acquired the assets of Enron during its bankruptcy proceedings. Some consumers boycotted GE light bulbs, refrigerators and other products in the 1980s and 1990s to protest GEs role in weapons production. With IBM, Burroughs, NCR, Control Data Corporation, Honeywell, RCA and UNIVAC, GE had a line of general purpose and special purpose computers
27.
Turbine
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A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating power when combined with a generator or producing thrust. A turbine is a turbomachine with at least one moving part called a rotor assembly, moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels, gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Modern steam turbines frequently employ both reaction and impulse in the unit, typically varying the degree of reaction and impulse from the blade root to its periphery. Benoit Fourneyron, a student of Claude Burdin, built the first practical water turbine. A working fluid contains potential energy and kinetic energy, the fluid may be compressible or incompressible. Several physical principles are employed by turbines to collect this energy, the resulting impulse spins the turbine and leaves the fluid flow with diminished kinetic energy. There is no change of the fluid or gas in the turbine blades, as in the case of a steam or gas turbine. Before reaching the turbine, the pressure head is changed to velocity head by accelerating the fluid with a nozzle. Pelton wheels and de Laval turbines use this process exclusively, Impulse turbines do not require a pressure casement around the rotor since the fluid jet is created by the nozzle prior to reaching the blades on the rotor. Newtons second law describes the transfer of energy for impulse turbines, Impulse turbines are most efficient for use in cases where the flow is low and the inlet pressure is high. Reaction turbines develop torque by reacting to the gas or fluids pressure or mass, the pressure of the gas or fluid changes as it passes through the turbine rotor blades. A pressure casement is needed to contain the working fluid as it acts on the stage or the turbine must be fully immersed in the fluid flow. The casing contains and directs the working fluid and, for water turbines, Francis turbines and most steam turbines use this concept. For compressible working fluids, multiple stages are usually used to harness the expanding gas efficiently. Newtons third law describes the transfer of energy for reaction turbines, reaction turbines are better suited to higher flow velocities or applications where the fluid head is low. In practice, modern designs use both reaction and impulse concepts to varying degrees whenever possible
28.
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
29.
Kilowatt
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The watt is a derived unit of power in the International System of Units defined as 1 joule per second and can be used to quantify the rate of energy transfer. Power has dimensions of M L2 T −3, when an objects velocity is held constant at one meter per second against constant opposing force of one newton the rate at which work is done is 1 watt. 1 W =1 V ⋅ A Two additional unit conversions for watt can be using the above equation. 1 W =1 V2 Ω =1 A2 ⋅ Ω Where ohm is the SI derived unit of electrical resistance, a person having a mass of 100 kilograms who climbs a 3-meter-high ladder in 5 seconds is doing work at a rate of about 600 watts. Mass times acceleration due to gravity times height divided by the time it takes to lift the object to the given height gives the rate of doing work or power. A laborer over the course of an 8-hour day can sustain an output of about 75 watts, higher power levels can be achieved for short intervals. The watt is named after the Scottish scientist James Watt for his contributions to the development of the steam engine, in 1960 the 11th General Conference on Weights and Measures adopted it for the measurement of power into the International System of Units. For additional examples of magnitude for multiples and submultiples of the watt, technologically important powers that are measured in femtowatts are typically found in reference to radio and radar receivers. For example, meaningful FM tuner performance figures for sensitivity, quieting and these input levels are often stated in dBf. This is 0.2739 microvolt across a 75-ohm load or 0.5477 microvolt across a 300-ohm load, the picowatt is equal to one trillionth of a watt. Technologically important powers that are measured in picowatts are typically used in reference to radio and radar receivers, acoustics, the nanowatt is equal to one billionth of a watt. Important powers that are measured in nanowatts are also used in reference to radio. The microwatt is equal to one millionth of a watt, compact solar cells for devices such as calculators and watches are typically measured in microwatts. The milliwatt is equal to one thousandth of a watt, a typical laser pointer outputs about five milliwatts of light power, whereas a typical hearing aid for people uses less than one milliwatt. Audio signals and other electronic signal levels are measured in dBm. The kilowatt is equal to one thousand watts and this unit is typically used to express the output power of engines and the power of electric motors, tools, machines, and heaters. It is also a unit used to express the electromagnetic power output of broadcast radio. One kilowatt is equal to 1.34 horsepower
30.
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
31.
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
32.
Kilometres per hour
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The kilometre per hour is a unit of speed, expressing the number of kilometres travelled in one hour. Worldwide, it is the most commonly used unit of speed on road signs, the Dutch on the other hand adopted the kilometre in 1817 but gave it the local name of the mijl. The SI representations, classified as symbols, are km/h, km h−1 and km·h−1, the use of abbreviations dates back to antiquity, but abbreviations for kilometres per hour did not appear in the English language until the late nineteenth century. The kilometre, a unit of length, first appeared in English in 1810, kilometres per hour did not begin to be abbreviated in print until many years later, with several different abbreviations existing near-contemporaneously. For example, news organisations such as Reuters and The Economist require kph, in Australian unofficial usage, km/h is sometimes pronounced and written as klicks or clicks. The use of symbols to replace words dates back to at least the medieval era when Johannes Widman, writing in German in 1486. In the early 1800s Berzelius introduced a symbolic notation for the chemical elements derived from the elements Latin names, typically, Na was used for the element sodium and H2O for water. In 1879, four years after the signing of the Treaty of the Metre, among these were the use of the symbol km for kilometre. In 1948, as part of its work for the SI. The SI explicitly states that unit symbols are not abbreviations and are to be using a very specific set of rules. Hence the name of the unit can be replaced by a kind of algebraic symbol and this symbol is not merely an abbreviation but a symbol which, like chemical symbols, must be used in a precise and prescribed manner. SI, and hence the use of km/h has now been adopted around the world in areas related to health and safety. It is also the system of measure in academia and in education. During the early years of the car, each country developed its own system of road signs. In 1968 the Vienna Convention on Road Signs and Signals was drawn up under the auspices of the United Nations Economic, many countries have since signed the convention and adopted its proposals. The use of SI implicitly required that states use km/h as the shorthand for kilometres per hour on official documents. Examples include, Dutch, kilometer per uur, Portuguese, quilómetro por hora Greek, in 1988 the United States National Highway Traffic Safety Administration promulgated a rule stating that MPH and/or km/h were to be used in speedometer displays. On May 15,2000 this was clarified to read MPH, or MPH, however, the Federal Motor Vehicle Safety Standard number 101 allows any combination of upper- and lowercase letters to represent the units
33.
Miles per hour
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Miles per hour is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. Miles per hour is the also used in the Canadian rail system. In some countries mph may be used to express the speed of delivery of a ball in sporting events such as cricket, tennis, road traffic speeds in other countries are indicated in kilometres per hour, while occasionally both systems are used. For example, in Ireland, a considered a speeding case by examining speeds in both kilometres per hour and miles per hour. The judge was quoted as saying the speed seemed very excessive at 180 km/h but did not look as bad at 112 mph, nautical and aeronautical applications, however, favour the knot as a common unit of speed. 1 Mph =0.000277778 Mps Example, Apollo 11 attained speeds of 25,000 Mph, if Apollo 11 were to travel at 25,000 Mph from New York to Los Angeles it would reach Los Angeles in under 6 minutes
34.
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
35.
Kilometre
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The kilometre or kilometer is a unit of length in the metric system, equal to one thousand metres. K is occasionally used in some English-speaking countries as an alternative for the kilometre in colloquial writing. A slang term for the kilometre in the US military is klick, there are two common pronunciations for the word. It is generally preferred by the British Broadcasting Corporation and the Australian Broadcasting Corporation, many scientists and other users, particularly in countries where the metric system is not widely used, use the pronunciation with stress on the second syllable. The latter pronunciation follows the pattern used for the names of measuring instruments. The problem with this reasoning, however, is that the meter in those usages refers to a measuring device. The contrast is more obvious in countries using the British rather than American spelling of the word metre. When Australia introduced the system in 1975, the first pronunciation was declared official by the governments Metric Conversion Board. However, the Australian prime minister at the time, Gough Whitlam, by the 8 May 1790 decree, the Constituent assembly ordered the French Academy of Sciences to develop a new measurement system. In August 1793, the French National Convention decreed the metre as the length measurement system in the French Republic. The first name of the kilometre was Millaire, although the metre was formally defined in 1799, the myriametre was preferred to the kilometre for everyday use. The term myriamètre appeared a number of times in the text of Develeys book Physique dEmile, ou, Principes de la de la nature. French maps published in 1835 had scales showing myriametres and lieues de Poste, the Dutch, on the other hand, adopted the kilometre in 1817 but gave it the local name of the mijl. It was only in 1867 that the term became the only official unit of measure in the Netherlands to represent 1000 metres. In the US, the National Highway System Designation Act of 1995 prohibits the use of highway funds to convert existing signs or purchase new signs with metric units. Although the State DOTs had the option of using metric measurements or dual units, all of them abandoned metric measurements, the Manual on Uniform Traffic Control Devices since 2000 is published in both metric and American Customary Units. Some sporting disciplines feature 1000 m races in major events, but in other disciplines, even though records are catalogued
36.
Mile
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The mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959. The Romans divided their mile into 5,000 feet but the importance of furlongs in pre-modern England meant that the statute mile was made equivalent to 8 furlongs or 5,280 feet in 1593. This form of the mile then spread to the British-colonized nations who continue to employ the mile, the US Geological Survey now employs the metre for official purposes but legacy data from its 1927 geodetic datum has meant that a separate US survey mile continues to see some use. Derived units such as miles per hour and miles per gallon, however, continue to be abbreviated as mph, mpg. The modern English word mile derives from Middle English myl and Old English mīl, the present international mile is usually what is understood by the unqualified term mile. When this distance needs to be distinguished from the nautical mile, in British English, the statute mile may refer to the present international miles or to any other form of English mile since the 1593 Act of Parliament which set it as a distance of 1,760 yards. Under American law, however, the statute mile refers to the US survey mile, the mile has been variously abbreviated—with and without a trailing period—as m, M, ml, and mi. The American National Institute of Standards and Technology now uses and recommends mi in order to avoid confusion with the SI metre and millilitre. Derived units such as miles per hour and miles per gallon, however, continue to be abbreviated in the United States, United Kingdom, the BBC style holds that There is no acceptable abbreviation for ‘miles’ and so it should be spelt out when used in describing areas. The Roman mile consisted of a thousand paces as measured by every other step—as in the distance of the left foot hitting the ground 1,000 times. The ancient Romans, marching their armies through uncharted territory, would push a carved stick in the ground after each 1000 paces. Well-fed and harshly driven Roman legionaries in good weather thus created longer miles, the distance was indirectly standardised by Agrippas establishment of a standard Roman foot in 29 BC, and the definition of a pace as 5 feet. An Imperial Roman mile thus denoted 5,000 Roman feet, surveyors and specialized equipment such as the decempeda and dioptra then spread its use. In modern times, Agrippas Imperial Roman mile was empirically estimated to have been about 1,481 metres in length, in Hellenic areas of the Empire, the Roman mile was used beside the native Greek units as equivalent to 8 stadia of 600 Greek feet. The mílion continued to be used as a Byzantine unit and was used as the name of the zero mile marker for the Byzantine Empire. The Roman mile also spread throughout Europe, with its local variations giving rise to the different units below, also arising from the Roman mile is the milestone. All roads radiated out from the Roman Forum throughout the Empire –50,000 miles of stone-paved roads, at every mile was placed a shaped stone, on which was carved a Roman numeral, indicating the number of miles from the center of Rome – the Forum. Hence, one knew how far one was from Rome
37.
Keel laying
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Laying the keel or laying down is the formal recognition of the start of a ships construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company, keel laying is one of the four specially-celebrated events in the life of a ship, the others are launching, commissioning, and decommissioning. In earlier times, the event recognized as the keel laying was the placement of the central timber making up the backbone of a vessel. As steel ships replaced wooden ones, the central timber gave way to a steel beam. Modern ships are now built in a series of pre-fabricated. The event recognized as the keel laying is the first joining of modular components and it is now often called keel authentication, and is the ceremonial beginning of the ships life, although modules may have been started months before that stage of construction. Keel-related traditions from the times of wooden ships are said to bring luck to the ship during construction and to the captain, the first milestone in the history of a ship is the generally simple ceremony that marks the laying of the keel. Invitations to the ceremony are issued by officials, and the ceremony is conducted by them. The builder may be the commander of a shipyard or the president of a private company. The ships prospective name, without the USS, is mentioned in the invitation, if known, otherwise her type and number are given, e. g. DD2217
38.
Camden, New Jersey
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Camden is a city in Camden County, New Jersey. Camden is located directly across the Delaware River from Philadelphia, Pennsylvania, at the 2010 United States Census, the city had a population of 77,344. Camden is the 12th most populous municipality in New Jersey, the city was incorporated on February 13,1828. On March 13,1844, Camden became a county seat in New Jersey, the city derives its name from Charles Pratt, 1st Earl Camden. Camden is made up of twenty different neighborhoods. By the end of the nineteenth century Camden began to industrialize with the foundation of the Campbell Soup Company by Joseph Campbell, other companies such as the New York Shipbuilding Corporation and the Victor Talking Machine Company opened their operations and helped Camden move into an industrial economy. At the beginning of the twentieth century Camdens population consisted mostly of European immigrants, german, British, and Irish immigrants, as well as African Americans from the south made up the majority of the city in the mid nineteenth century. Around the turn of the twentieth century Italian and Eastern European immigrants had become the majority of the population, the city was consistently prosperous throughout the Great Depression and World War II. After World War II Camden manufacturers began closing their factories and moving out of the city, Camdens cultural history has been greatly affected by both its economic and social position over the years. With the loss of manufacturing jobs came a decline in population numbers. Suburbanization also had an effect on the drop in population, Civil unrest and crime became common in Camden with the decline in population. In 1971, civil unrest reached its peak with riots breaking out in response to the death of Horacio Jimenez, Camdens industrial and post-industrial history gave rise to distinct neighborhoods and cultural groups that have affected the status of the city over the course of the 20th century. Over the years Camden has made attempts to restore its economic stature. In the 1980s Mayor Randy Primas campaigned for the city to two different nuisance industries, a prison and a trash-to-steam incinerator. Despite opposition from Camden residents, the Riverfront State Prison was opened in 1985, with the addition of the trash-to-steam plant Camden has faced numerous air and water pollution issues. Camden is also the home of a treatment facility. In the 1970s, dangerous pollutants were found in the wells from which many Camden citizens received their household water and these pollutants decreased property values in Camden and caused health problems among the citys residents. Pollution is an issue that local nonprofits are trying to solve
39.
Rear admiral
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Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the admiral ranks, in many navies it is referred to as a two-star rank. It originated from the days of naval sailing squadrons and can trace its origins to the Royal Navy, each naval squadron would be assigned an admiral as its head, who would command from the centre vessel and direct the activities of the squadron. The admiral would in turn be assisted by a vice admiral and this has survived into the modern age, with the rank of rear admiral the most-junior of the admiralty ranks of many navies. In some European navies, and in the Canadian Forces French rank translations, in the German Navy the rank is known as Konteradmiral, superior to the flotilla admiral. In the Royal Netherlands Navy, this rank is known as schout-bij-nacht, denoting the role junior to the squadron admiral, the Royal Australian Navy maintains a rank of rear admiral, refer to Australian Defence Force ranks and insignia. Since the mid-1990s, the insignia of a Royal Australian Navy rear admiral is the Crown of St. Edward above a crossed sword and baton, like the Royal Navy version, the sword is a traditional naval cutlass. The stars have eight points, unlike the four pointed Order of the Bath stars used by the army, prior to 1995, the RAN shoulder board was identical to the Royal Navy shoulder board. The Royal Navy shoulder board changed again in 2001 and the Australian, rear Admiral Robyn Walker AM, RAN became the first female admiral in the Royal Australian Navy when she was appointed Surgeon-General of the Australian Defence Force on 16 December 2011. In the Royal Canadian Navy, the rank of rear-admiral is the Navy rank equivalent to major-general of the Army, a rear-admiral is a flag officer, the naval equivalent of a general officer. A rear-admiral is senior to a commodore and brigadier-general, and junior to a vice-admiral and lieutenant-general, the service dress features a wide strip of gold braid around the cuff and, since June 2010, above it a narrower strip of gold braid embellished with the executive curl. On the visor of the cap are two rows of gold oak leaves. Konteradmiral is an OF-7 two-star rank equivalent to the Generalmajor in the German Army, see also The Guyana Defence Force Coast Guard is the naval component of the Military of Guyana. As such, the ranks of the Coast Guard are naval ranks similar to the practice in the respective Coast Guards of Jamaica and Trinidad, the rank of rear admiral was first awarded to chief of staff commodore Gary Best on August 19,2013. The rank insignia consists of two silver pips with green highlights, beneath a crossed sword and baton, all surmounted by the gold-colored Caciques crown with red, the Indian Navy also maintains a rear admiral rank senior to commodore and captain ranks and junior to vice admiral ranks. The rank insignia for a rear-admiral is two stars beneath crossed sword and baton, all surmounted by Emblem of India, worn on shoulder boards, before Islamic Revolution The Iranian Imperial Navy. After Islamic Revolution The Islamic Republic of Iran Navy, also known as the Iranian Navy, a rear admiral in the Pakistani Navy is a senior and two-star rank naval officer, appointed in higher naval commands. Like most Commonwealth navies, the rear admiral rank is superior to commodore, however, the rank is junior to the three-star rank vice-admiral and four-star rank admiral, who is generally a Chief of Naval Staff of the Navy
40.
Ship commissioning
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Ship commissioning is the act or ceremony of placing a ship in active service, and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to the placing of a warship in active duty with its countrys military forces, the ceremonies involved are often rooted in centuries old naval tradition. Ship naming and launching endow a ship hull with her identity, the engineering plant, weapon and electronic systems, galley, and multitudinous other equipment required to transform the new hull into an operating and habitable warship are installed and tested. The prospective commanding officer, ships officers, the petty officers, prior to commissioning, the new ship undergoes sea trials to identify any deficiencies needing correction. USS Monitor, of American Civil War fame, was commissioned less than three weeks after launch, regardless of the type of ship in question, a vessels journey towards commissioning in its nations navy begins with process known as sea trials. Sea trials begin when the ship in question is floated out of its dry dock, after a ship has successfully cleared its sea trial period, it will officially be accepted into service with its nations navy. At this point, the ship in question will undergo a process of degaussing and/or deperming, once a ships sea trials are successfully completed plans for the actual commissioning ceremony will take shape. If the ships ceremony is an affair the Captain may make a speech to the audience. Religious ceremonies, such as blessing the ship or the singing of hymns or songs. Once a ship has been commissioned its final step toward becoming a unit of the navy it now serves is to report to its home port. To decommission a ship is to terminate its career in service in the forces of a nation. Decommissioning of the vessel may also occur due to treaty agreements or for safety reasons, vessels preserved in this manner typically do not relinquish their names to other, more modern ships that may be in the design, planning, or construction phase of the parent nations navy. Prior to its decommissioning, the ship in question will begin the process of decommissioning by going through a preliminary step called inactivation or deactivation. The removed material from a ship usually ends up either rotating to another ship in the class with similar weapons and/or capabilities, or in storage pending a decision on equipments fate. During this time a crew may be thinned out via transfers. When a ship finishes its inactivation, it is then formally decommissioned, often, but not always, ships that are decommissioned end up spending the next few years in a reserve fleet before their ultimate fate is decided. Commissioning in the early United States Navy under sail was attended by no ceremony, thus, the ship was placed in commission. Commissionings were not public affairs, and unlike christening-and-launching ceremonies, were not recorded by newspapers, the first specific reference to commissioning located in naval records is a letter of November 6,1863, from Secretary of the Navy Gideon Welles to all navy yards and stations
41.
Captain (United States O-6)
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The predecessors of the NOAA Corps, the United States Coast and Geodetic Survey Corps and the Environmental Science Services Administration Corps, also used the rank. In the United States Navy, captain is an officer rank. It ranks above commander and below rear admiral and it is equivalent to the rank of colonel in the other uniformed services. Promotion to captain is governed by Department of Defense policies derived from the Defense Officer Personnel Management Act of 1980 or its companion Reserve Officer Personnel Management Act, Navy captains with sea commands in the surface warfare officer community generally command ships of cruiser size or larger. The more senior the officer, the larger the ship, others may hold command as commodores of destroyer squadrons consisting of multiple destroyers and frigates. Surface Warfare Officers may also command large amphibious warfare ships or combat support ships. Today, like their surface warfare counterparts, captains in the community may serve as commodores of submarine squadrons. A smaller cohort outside of sea and shore commands may also serve as astronauts on loan to the National Aeronautics, in the Naval Special Warfare Sea Air Land community, captains with sea commands are typically commodores in command of Naval Special Warfare Groups. In addition, in the strike group, the Marine Expeditionary Unit commanding officer will always be a Marine Corps colonel. Adding to the confusion, all commanding officers of commissioned U. S. Navy warships and submarines are called captain regardless of actual rank. The United States Coast Guard also uses the same rank system for its commissioned officers as the U. S. Navy, with a Coast Guard captain ranking above a commander. The sleeve and shoulder board insignia are similar to the Navy insignia, the Coast Guard has no staff corps officers. Like the U. S. Navy, all commanding officers of commissioned cutters are addressed as captain regardless of their actual rank, seagoing NOAA captains command certain National Oceanic and Atmospheric Administration ships, while NOAA aviators command NOAA flight operations activities. USPHS rapid deployment force teams, containing 105 USPHS physicians, nurses, although it exists largely as a maritime training organization, the United States Maritime Service also uses the rank of captain. Captain DA Pamphlet 600–3, Commissioned Officer Professional Development and Career Management
42.
Bataan
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Bataan is a province situated in the Central Luzon region of the Philippines. Its capital is the City of Balanga, occupying the entire Bataan Peninsula on Luzon, Bataan is bordered by the provinces of Zambales and Pampanga to the north. The peninsula faces the South China Sea to the west and Subic Bay to the north-west, the Battle of Bataan is famous in history as one of the last stands of American and Filipino soldiers before they were overwhelmed by the Japanese forces in World War II. The Bataan Death March was named after the province, where the march started. In 1647, Dutch naval forces landed in country in an attempt to seize the islands from Spain, the Dutch massacred the people of Abucay in Bataan. Bataan featured prominently during World War II, prior to the 1941 Japanese invasion, the US Army stored nearly 1,000,000 US gallons of gasoline there. Japanese forces started a siege of the peninsula on January 7,1942, and launched an assault on April 3. The majority of the American and Filipino forces surrendered on April 9 and were forced to more than a 100 kilometres from Bataan to Capas-Tarlac. The Administration of President Rodrigo Duterte is currently pushing for federalism in the country, scholars in the region have suggested naming the state the State of Luções, named after the historic collective name of the people of Luzon. During precolonial times, when the power of the kingdoms in present-day Metro Manila was declining, the people of Myanmar, Timor, Luções were known as skilled mercenaries, merchants, and even battle soldiers. They aided in the war campaigns of Myanmar, Malacca, when the Spanish came and stormed Luzon, the ties of the Luceos with their ally countries were cut and the Luções were turned into commoners and indios by the Spaniards. At the northern portion of the peninsula is Mount Natib and its mountains, separated from Mount Samat. A narrow coastline plain characterizes the eastern portion of the province, while the western coast features many ridges, cliffs, Bataan is politically subdivided into 11 municipalities and one component city. The population of Bataan in the 2015 census was 760,650 people, various religious groups are subscribed to by the people but Roman Catholicism is the predominant religion, comprising 85% of the Bataan population. Aglipayan as well as several Christian faiths are the minority, Nuestra Señora del Pilar Church — Morong Nuestra Señora del Pilar Church — Pilar Nuestra Señora, Virgen Milagrosa del Rosario Church — Orani, declared as a diocesan-shrine by the Diocese of Balanga. It is home to the image of the Our Lady of the Holy Rosary which was canonically crowned 18 April 1959. It plays a role in the Central Luzon “W” Growth Corridor. It is also a transport route and transshipment point linking SBMA area
43.
Battle of Bataan
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The Battle of Bataan was a battle that represented the most intense phase of Imperial Japans invasion of the Philippines during World War II. In January 1942, forces of the Imperial Japanese Army and Navy invaded Luzon along with several islands in the Philippine Archipelago after the bombing of the American naval base at Pearl Harbor, by this time, the Japanese controlled nearly all of Southeast Asia. The Bataan peninsula and the island of Corregidor were the only remaining Allied strongholds in the region, despite a lack of supplies, Filipino and American forces managed to fight the Japanese for three months, engaging them initially in a fighting retreat southward. As the combined Filipino and American forces made a last stand, soon afterwards, Filipino and American prisoners of war were forced into the Bataan Death March. The capture of the Philippine Islands was crucial to Japans effort to control the Southwest Pacific, seize the resource-rich Dutch East Indies, many American planes were caught on the ground and summarily destroyed. In one day, the Japanese had gained air superiority over the Philippine Islands and this forced the U. S. Asiatic Fleet to withdraw its surface ships from its naval base in Cavite and retreat southwards, leaving only the submarine force to resist the Japanese. Army air force B-17s, often with a minimal or no fighter escort, attacked Japanese ships offloading at Gonzaga, submarines of the Asiatic Fleet were also assigned to the effort. In one last coordinated action by the Far East Air Force and these air attacks and naval actions, however, did not significantly delay the Japanese assault. Each plan covered a different situation, with War Plan Orange covering an emergency involving only the United States and this made the plan politically unrealistic and completely outdated by 1941. Tactically, however, the plan was an excellent one and its provisions for defense were applicable under any local situation, under WPO-3, the mission of the Philippine garrison was to hold the entrance to Manila Bay and deny its use to Japanese naval forces. The primary task of U. S. Army forces were to prevent enemy landings and it was to be defended to the last extremity. In addition to the regular U. S. Army troops, the defenders could rely on the Philippine Army, WPO-3 made no provision for what should be done if the defenses on Bataan crumbled, because the planners presumed that within six months, the U. S. The defenders, thus reinforced, could mount a counteroffensive and drive the enemy into the sea, however, no one in a position of authority in April 1941 believed that anything like this would happen. Informed naval opinion estimated that it would require at least two years for the Pacific Fleet to fight its way across the Pacific, Army planners in early 1941 believed supplies would be exhausted within six months, if not sooner, and the garrison would fall to the enemy. General MacArthur assumed command of the Allied army in July 1941 and rejected WPO-3 as defeatist and he recommended—among other things—a coastal defense strategy that would include the entire archipelago. His recommendations were followed in the plan that was eventually approved, when the Japanese made their first landings on 10 and 12 December at the northern and southern extremities of Luzon, General MacArthur made no disposition to contest them. He correctly surmised that these landings were designed to advance air bases. He did not regard the situation as serious enough to warrant a change in his plan to oppose the main attack, the MacArthur Plan, then, remained in effect
44.
Philadelphia Naval Shipyard
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The Navy Yard, formerly known as the Philadelphia Naval Shipyard and Philadelphia Naval Business Center, was an important naval shipyard of the United States for almost two centuries. It is now an industrial park that includes a commercial shipyard. Philadelphias original navy yard, begun in 1776 on Front Street, the new, much larger yard grew up around facilities begun in 1871 on League Island at the confluence of the Delaware and Schuylkill Rivers. The United States Navy ended most of its activities there in the 1990s, and in 2000, the Navy still has a Naval Inactive Ship Maintenance Facility and a few engineering activities at the site. The yard has its origins in a shipyard on Philadelphias Front Street on the Delaware River that was founded in 1776, from 1812 till 1865 it was a big production center. The first ship which was launched to the water was vessel Franklin and this event was watched by more than 50,000 spectators. The rapid development of shipbuilding companies pledged Philadelphia to improve production processes. It was the first shipyard in the world which used floating dry docks in the process to improve an operating time of the ships. After the advent of ironclad warships made the site obsolete, new facilities were built in 1871 on League Island at the confluence of the Delaware and Schuylkill Rivers. After first making a request to the Secretary of the Navy via shipyard Commandant Commodore James Barron, on August 29,1835 they appealed directly to President Andrew Jackson, there is no probability they will secede from their demands. Rodegier, David R. and Foner, Sheldon Our Own Time, A History of American Labor, Naval Aircraft Factory was established at the League Island site in 1917. Just after World War I, a 350-ton capacity hammerhead crane was ordered for the yard, manufactured in 1919 by the McMyler-Interstate Company in Bedford, Ohio, the crane was called the League Island Crane by its builder. Weighing 3,500 tons, the crane was shipped to the yard in sections, the League Island Crane was for many years the Navys largest crane. Mustin Field opened at the Naval Aircraft Factory in 1926 and operated until 1963, the shipyards greatest period came in World War II, when the yard employed 40,000 people who built 53 ships and repaired 574. During this period, the built the famed battleship New Jersey and its 45, 000-ton sister ship. In the Naval Laboratory Philip Abelson developed the thermal diffusion technique for separating U-235 for the Manhattan Project. After the war, the workforce dropped to 12,000, the yard built its last new ship, the command ship Blue Ridge, in 1970. The yards closure was originally recommended in 1991 by the Base Realignment and Closure Commission, as a result of foreign competition, the planned closing was unsuccessfully litigated to the US Supreme Court in Dalton v. Specter
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Grumman F6F Hellcat
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The Grumman F6F Hellcat is an American carrier-based fighter aircraft of World War II. Designed to replace the earlier F4F Wildcat and to counter the Japanese Mitsubishi A6M Zero, the Hellcat competed with the faster Vought F4U Corsair for that role and prevailed, as the Corsair had significant issues with carrier landings. The Corsair instead was primarily deployed to great effect in land-based use by the U. S. Marine Corps, some military observers tagged the Hellcat as the Wildcats big brother. 12,275 were built in just over two years, Hellcats were credited with destroying a total of 5,223 enemy aircraft while in service with the U. S. Navy, U. S. Marine Corps and the Royal Navy Fleet Air Arm. This was more than any other Allied naval aircraft, postwar, the Hellcat was phased out of front line service but remained in service as late as 1954 as a night fighter. Grumman had been working on a successor to the F4F Wildcat since 1938, the aircraft was originally designed to use the Wright R-2600 Twin Cyclone two-row, 14-cylinder radial engine of 1,700 hp driving a three-bladed Curtiss Electric propeller. In addition, the forward fuselage sloped down slightly to the cowling, affording the Hellcats pilot good visibility. Grumman complied by redesigning and strengthening the F6F airframe to incorporate the 2,000 hp R-2800-10, with this combination Grumman estimated the XF6F-3s performance would increase by 25% over that of the XF6F-1. The Cyclone-powered XF6F-1 first flew on 26 June 1942, followed by the first Double Wasp-equipped aircraft, the XF6F-3, the first production F6F-3, powered by an R-2800-10, flew on 3 October 1942, with the type reaching operational readiness with VF-9 on USS Essex in February 1943. The F6F series were designed to damage and get the pilot safely back to base. A bullet-resistant windshield and a total of 212 lb of armor was fitted, along with armor around the oil tank. A250 gal self-sealing fuel tank was fitted in the fuselage, Standard armament on the F6F-3 consisted of six.50 in M2/AN Browning air-cooled machine guns with 400 rounds per gun. Six 5 in HVARs could be carried, three under each wing on zero-length launchers, Hellcat night fighters claimed their first victories in November 1943. A total of 4,402 F6F-3s were built through until April 1944, in addition, the rear fuselage and tail units were strengthened, and, apart from some early production aircraft, the majority of the F6F-5s built were painted in an overall gloss sea blue finish. After the first few F6F-5s were built, the windows behind the main canopy were deleted. The F6F-5N night fighter variant was fitted with an AN/APS-6 radar in a fairing on the outer-starboard wing, a small number of standard F6F-5s were also fitted with camera equipment for reconnaissance duties as the F6F-5P. The F6F-5 was the most common F6F variant, with 7,870 being built, other prototypes in the F6F series included the XF6F-4 which first flew on 3 October 1942 as the prototype for the projected F6F-4. This version never entered production and 02981 was converted to an F6F-3 production aircraft, the turbochargers proved to be unreliable on both engines, while performance improvements were marginal
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