1.
Brooklyn Navy Yard
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It was bounded by Navy Street and Flushing and Kent Avenues, and at the height of its production of warships for the United States Navy, it covered over 200 acres. The tremendous efforts of its 70,000 workers during World War II earned the yard the nickname The Can-Do Shipyard, following the American Revolution, the waterfront site was used to build merchant vessels. Federal authorities purchased the old docks and 40 acres of land for $40,000 in 1801, many officers were housed in Admirals Row. Military chain of command was strictly observed, the nations first ironclad ship, Monitor, was fitted with its revolutionary iron cladding at the Continental Iron Works in nearby Greenpoint. By the American Civil War, the yard had expanded to employ about 6000 men, in 1890, the ill-fated Maine was launched from the yards ways. In 1937, the battleship North Carolina was laid down, in 1938, the yard employed about 10,000 men, of whom one-third were Works Progress Administration workers. The battleship Iowa was completed in 1942 followed by the Missouri, on 12 January 1953, test operations began on Antietam, which emerged in December 1952 from the yard as Americas first angled-deck aircraft carrier. At its peak, during World War II, the yard employed 70,000 people,24 hours a day, the Brooklyn Naval Hospital, constructed 1830–38 and rebuilt 1841–43, was decommissioned in the mid-1970s. It was one of the oldest naval hospitals in the United States, the 60, 000-square-foot complex was designed by Martin E. Thompson. The hospital had its beginning in 1825 when the Secretary of the Navy purchased 25 acres adjacent to the Brooklyn Naval Yard. The hospital was active from the Civil War through World War II with the Navy Surgeon General reporting in 1864 an average of 229 patients, the hospital also counted on its staff some of first female nurses and medical students in the United States Navy. On November 19,1964, based on the study, the closure of the yard was announced, along with the Armys Fort Jay on Governors Island and its Brooklyn Army Terminal. At the time, the yard employed 10,600 civilian employees and 100 military personnel with a payroll of about US$90 million. The closure was anticipated to save about 18.1 million dollars annually, the plan was never put in place. The Wagner Administration looked to the industry to build a car plant inside the yard. No U. S. car manufacturer was interested, and foreign car manufacturers claimed that with the conversion of the dollar, the Navy decommissioned the yard in 1966, after the completion of the Austin-class amphibious transport dock USS Duluth. The Johnson administration refused to sell the yard to the City of New York for 18 months, when the new Nixon administration came into power, they signed the papers to sell the yard to the city. Leases were signed inside the yard even before the sale to the city was signed, cLICKs lease with the newly formed Seatrain Shipbuilding was not very business friendly
2.
Naval artillery
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Naval artillery is artillery mounted on a warship, originally used only for naval warfare, later also for naval gunfire support against targets on land, and for anti-aircraft use. The idea of artillery dates back to the classical era. Julius Caesar indicates the use of ship-borne catapults against Britons ashore in his Commentarii de Bello Gallico, the dromons of the Byzantine Empire carried catapults and fire-throwers. From the late Middle Ages onwards, warships began to carry cannon of various calibres, the Battle of Arnemuiden, fought between England and France in 1338 at the start of the Hundred Years War, was the first recorded European naval battle using artillery. The English ship Christopher was armed with three cannons and one hand gun, by the 15th century most Mediterranean powers were utilising heavy cannon mounted on the bow or stern of a vessel and designed to bombard fortresses on shore. By mid-century some vessels also carried smaller broadside cannons for bombarding other vessels immediately prior to an attempted boarding and these small guns were anti-personnel weapons and were fired at point blank range to accompany engagement with muskets or bows. From the 1470s both the Portuguese and Venetian navies were experimenting with cannons as anti-ship weapons, in 1489 John of Portugal further contributed to the development of naval artillery by establishing the first standardized teams of trained naval gunners. The 16th century was an era of transition in naval warfare, since ancient times, war at sea had been fought much like that on land, with melee weapons and bows and arrows, but on floating wooden platforms rather than battlefields. Though the introduction of guns was a significant change, it slowly changed the dynamics of ship-to-ship combat. As guns became heavier and able to more powerful gunpowder charges, they needed to be placed lower in the ship. Although some 16th-century galleys mounted broadside cannon, they did so at the expense of rowing positions which sacrificed speed, most early cannon were still placed in the forecastle and aftercastle of a ship where they might be conveniently pointed in any direction. Early naval artillery was a weapon to deter boarders, because cannon powerful enough to damage ships were heavy enough to destabilize any ship mounting them in an elevated castle. Being a crown industry, cost considerations did not curb the pursuit of the best quality, best innovations, the crown paid wage premiums and bonuses to lure the best European artisans and gunners to advance the industry in Portugal. This made broadsides, coordinated volleys from all the guns on one side of a ship, possible for the first time in history, at least in theory. Ships, such as Mary Rose, carried a mixture of cannon of different types and sizes, many designed for land use, and using incompatible ammunition at different ranges and rates of fire. The Mary Rose, like other ships of the time, was built during a period of development of heavy artillery. The heavy armament was a mix of older-type wrought iron and cast bronze guns, the bronze guns were cast in one piece and rested on four-wheel carriages which were essentially the same as those used until the 19th century. The breech-loaders were cheaper to produce and both easier and faster to reload, but could take less powerful charges than cast bronze guns, the majority of the guns were small iron guns with short range that could be aimed and fired by a single person
3.
World War I
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World War I, also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history and it was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved. The war drew in all the worlds great powers, assembled in two opposing alliances, the Allies versus the Central Powers of Germany and Austria-Hungary. These alliances were reorganised and expanded as more nations entered the war, Italy, Japan, the trigger for the war was the assassination of Archduke Franz Ferdinand of Austria, heir to the throne of Austria-Hungary, by Yugoslav nationalist Gavrilo Princip in Sarajevo on 28 June 1914. This set off a crisis when Austria-Hungary delivered an ultimatum to the Kingdom of Serbia. Within weeks, the powers were at war and the conflict soon spread around the world. On 25 July Russia began mobilisation and on 28 July, the Austro-Hungarians declared war on Serbia, Germany presented an ultimatum to Russia to demobilise, and when this was refused, declared war on Russia on 1 August. Germany then invaded neutral Belgium and Luxembourg before moving towards France, after the German march on Paris was halted, what became known as the Western Front settled into a battle of attrition, with a trench line that changed little until 1917. On the Eastern Front, the Russian army was successful against the Austro-Hungarians, in November 1914, the Ottoman Empire joined the Central Powers, opening fronts in the Caucasus, Mesopotamia and the Sinai. In 1915, Italy joined the Allies and Bulgaria joined the Central Powers, Romania joined the Allies in 1916, after a stunning German offensive along the Western Front in the spring of 1918, the Allies rallied and drove back the Germans in a series of successful offensives. By the end of the war or soon after, the German Empire, Russian Empire, Austro-Hungarian Empire, national borders were redrawn, with several independent nations restored or created, and Germanys colonies were parceled out among the victors. During the Paris Peace Conference of 1919, the Big Four imposed their terms in a series of treaties, the League of Nations was formed with the aim of preventing any repetition of such a conflict. This effort failed, and economic depression, renewed nationalism, weakened successor states, and feelings of humiliation eventually contributed to World War II. From the time of its start until the approach of World War II, at the time, it was also sometimes called the war to end war or the war to end all wars due to its then-unparalleled scale and devastation. In Canada, Macleans magazine in October 1914 wrote, Some wars name themselves, during the interwar period, the war was most often called the World War and the Great War in English-speaking countries. Will become the first world war in the sense of the word. These began in 1815, with the Holy Alliance between Prussia, Russia, and Austria, when Germany was united in 1871, Prussia became part of the new German nation. Soon after, in October 1873, German Chancellor Otto von Bismarck negotiated the League of the Three Emperors between the monarchs of Austria-Hungary, Russia and Germany
4.
Washington Navy Yard
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The Washington Navy Yard is the former shipyard and ordnance plant of the United States Navy in Southeast Washington, D. C. It is the oldest shore establishment of the U. S. Navy, the Yard currently serves as a ceremonial and administrative center for the U. S. S. Navy Judge Advocate Generals Corps, Marine Corps Institute, the United States Navy Band, in 1998, the yard was listed as a Superfund site due to environmental contamination. The history of the yard can be divided into its history and cultural. The land was purchased under an Act of Congress on July 23,1799, the Washington Navy Yard was established on October 2,1799, the date the property was transferred to the Navy. It is the oldest shore establishment of the U. S. Navy, the original boundaries that were established in 1800, along 9th and M Street SE, are still marked by a white brick wall that surrounds the Yard on the north and east sides. The next year, two lots were purchased. The north wall of the Yard was built in 1809 along with a guardhouse, after the Burning of Washington in 1814, Tingey recommended that the height of the eastern wall be increased to ten feet because of the fire and subsequent looting. The southern boundary of the Yard was formed by the Anacostia River, the west side was undeveloped marsh. The land located along the Anacostia was added to by landfill over the years as it became necessary to increase the size of the Yard, the USS Constitution came to the Yard in 1812 to refit and prepare for combat action. For the first thirty years of the century, the Navy Yard was the Districts principal employer of enslaved African Americans. Their numbers rose rapidly and by 1808, the muster lists, the number of enslaved workers gradually declined during the next thirty years. While the total number of enslaved workers declined, free African Americans remained a presence on the shipyard. Sailors of Navy Yard were part of the hastily assembled American army, the Navy Yard sailors, and Marines of nearby Marine Barracks, Washington, D. C. were in the third and last line of defense at Bladensburg. Together, they fought hand to hand with cutlasses and pikes against the British regulars before being overwhelmed, as the British marched into Washington, holding the Yard became impossible. Tingey, seeing the smoke from the burning Capitol, ordered the Yard burned to prevent its capture by the enemy, both structures are now individually listed on the National Register of Historic Places. Following the War of 1812, the Washington Navy Yard never regained its prominence as a shipbuilding facility, the waters of the Anacostia River were too shallow to accommodate larger vessels, and the Yard was deemed too inaccessible to the open sea. Thus came a shift to what was to be the character of the Yard for more than a century, ordnance, the Yard possessed one of the earliest steam engines in the United States
5.
Gun barrel
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A gun barrel is a part of firearms and artillery pieces. The hollow interior of the barrel is called the bore, a gun barrel must be able to hold in the expanding gas produced by the propellants to ensure that optimum muzzle velocity is attained by the projectile as it is being pushed out by the expanding gas. Modern small arms barrels are made of known and tested to withstand the pressures involved. Artillery pieces are made by various techniques providing reliably sufficient strength, early firearms were muzzle-loading, with powder, and then shot loaded from the muzzle, capable of only a low rate of fire. During the 19th century effective mechanical locks were invented that sealed a breech-loading weapon against the escape of propellant gases, the early Chinese, the inventors of gunpowder, used bamboo, a naturally tubular stalk, as the first barrels in gunpowder projectile weapons. Early European guns were made of iron, usually with several strengthening bands of the metal wrapped around circular wrought iron rings. The Chinese were the first to master cast-iron cannon barrels, early cannon barrels were very thick for their caliber. Bore evacuator Bore snake Cannon Muzzle Polygonal rifling Rifling Slug barrel Smoothbore
United States Navy
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