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Mark 37 Director
Ship gun fire-control systems (GFCS) are analogue fire-control systems that were used aboard naval warships prior to modern electronic computerized systems, to control targeting of guns against surface ships, aircraft, and shore targets, with either optical or radar sighting. Most US ships that are destroyers or larger (but not destroyer escorts except Brooke class DEG's later designated FFG's or escort carriers) employed gun fire-control systems for and larger guns, up to battleships, such as . Beginning with ships built in the 1960s, warship guns were largely operated by computerized systems, i.e. systems that were controlled by electronic computers, which were integrated with the ship's missile fire-control systems and other ship sensors. As technology advanced, many of these functions were eventually handled fully by central electronic computers. The major components of a gun fire-control system are a human-controlled Director (military), director, along with or later repl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Great Game
The Great Game was a rivalry between the 19th-century British and Russian empires over influence in Central Asia, primarily in Afghanistan, Persia, and Tibet. The two colonial empires used military interventions and diplomatic negotiations to acquire and redefine territories in Central and South Asia. Russia conquered Turkestan, and Britain expanded and set the borders of British India. By the early 20th century, a line of independent states, tribes, and monarchies from the shore of the Caspian Sea to the Eastern Himalayas were made into protectorates and territories of the two empires. Though the Great Game was marked by distrust, diplomatic intrigue, and regional wars, it never erupted into a full-scale war directly between Russian and British colonial forces. However, the two nations battled in the Crimean War from 1853 to 1856, which affected the Great Game. The Russian and British Empires also cooperated numerous times during the Great Game, including many treaties an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barr And Stroud
Barr & Stroud Limited was a pioneering Glasgow optical engineering firm. They played a leading role in developing modern optics, including rangefinders, for the Royal Navy and other branches of British Armed Forces during the 20th century. There was a non-military arm of the company which made medical equipment, like photocoagulators and electronic filters, some of which were used by the BBC. The company and its intellectual property passed through Pilkington group to Thales Optronics. The Barr and Stroud name was sold to an importer of optical equipment, who used the trademarked name for a line of binoculars and similar instruments. History Archibald Barr and William Stroud had been associated from as early as 1888 when the two men were professors of, respectively, engineering and physics at the Yorkshire College (now the University of Leeds). In 1891, they were approached by the Admiralty to submit a design for a short-base rangefinder for trial. By this time, Barr had r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Battleship Mikasa
is a pre-dreadnought battleship built for the Imperial Japanese Navy (IJN) in the late 1890s, and is the only ship of her ship class, class. Named after Mount Mikasa in Nara, Nara, Nara, Japan, the ship served as the flagship of Vice Admiral Tōgō Heihachirō throughout the Russo-Japanese War of 1904–1905, including the Battle of Port Arthur on the second day of the war and the Battle of the Yellow Sea, Battles of the Yellow Sea and Battle of Tsushima, Tsushima. Days after the end of the war, ''Mikasa''s magazine (artillery), magazine accidentally exploded and sank the ship. She was marine salvage, salvaged and her repairs took over two years to complete. Afterwards, the ship served as a coast-defence ship during World War I and supported Japanese forces during the Siberian Intervention in the Russian Civil War. After 1922, ''Mikasa'' was Ship decommissioning, decommissioned in accordance with the Washington Naval Treaty and preserved as a museum ship at Yokosuka, Kanagawa, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Battleship Asahi
was a pre-dreadnought battleship built for the Imperial Japanese Navy (IJN) in the late 1890s. As Japan lacked the industrial capacity to build such warships itself, the ship was designed and built in the United Kingdom. Shortly after her arrival in Japan, she became flagship of the Standing Fleet, the IJN's primary combat fleet. She participated in every major naval battle of the Russo-Japanese War of 1904–1905 and was lightly damaged during the Battle of the Yellow Sea and the Battle of Tsushima. ''Asahi'' saw no combat during World War I, although the ship participated in the Siberian Intervention in 1918. Reclassified as a coastal defence ship in 1921, ''Asahi'' was disarmed two years later to meet the terms of the Washington Naval Treaty, after which she served as a training ship, training and submarine depot ship. She was modified into a submarine marine salvage, salvage and rescue ship before being placed in Reserve fleet, reserve in 1928. ''Asahi'' was recommissioned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Pacific Fleet
The Pacific Fleet () is the Russian Navy fleet in the Pacific Ocean. Established in 1731 as part of the Imperial Russian Navy, the fleet was known as the Okhotsk Military Flotilla (1731–1856) and Siberian Military Flotilla (1856–1918), formed to defend Russian interests in the Russian Far East region along the Pacific coast. In 1918 the fleet was inherited by the Russian Soviet Federative Socialist Republic, then the Soviet Union in 1922 as part of the Soviet Navy, being reformed several times before being disbanded in 1926. In 1932 it was re-established as the Pacific Fleet, and was known as the Red Banner Pacific Fleet () after World War II as it had earned the Order of the Red Banner. In the Soviet years, the fleet was also responsible for the Soviet Navy's operations in the Indian Ocean and Arabian Sea. Following the collapse of the Soviet Union in 1991, the Red Banner Pacific Fleet was inherited by the Russian Federation as part of the Russian Navy and its current name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of The Yellow Sea
The Battle of the Yellow Sea (; ) was a naval battle of the Russo-Japanese War, fought on 10 August 1904. In the Russian Navy, it was referred to as the Battle of 10 August. The battle foiled an attempt by the Russian fleet at Lüshunkou (Port Arthur) to break out and form up with the Vladivostok squadron, forcing them to return to port. Four days later, the Battle off Ulsan similarly ended the Vladivostok group's sortie, forcing both fleets to remain at anchor. Background The Imperial Russian Navy's First Pacific Squadron (Admiral Wilgelm Vitgeft) had been trapped in Lüshunkou (Port Arthur) since the Imperial Japanese Navy blockade began on 8 February 1904 with the Battle of Port Arthur. In July and early August, as the Imperial Japanese Army laid siege to Port Arthur, relations between Vitgeft and the Russian Viceroy Yevgeni Alekseyev soured. Alekseyev, a former admiral, favored an aggressive sortie so as to enable the First Pacific Squadron to link up with the Vladivosto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved following surrender of Japan, Japan's surrender in World War II. The Japan Maritime Self-Defense Force (JMSDF) was formed between 1952 and 1954 after the dissolution of the IJN. The IJN was the third largest navy in the world by 1920, behind the Royal Navy and the United States Navy (USN). It was supported by the Imperial Japanese Navy Air Service for reconnaissance and airstrike operations from the fleet. It was the primary opponent of the Allies of World War II, Western Allies in the Pacific War. The IJN additionally fielded Imperial Japanese Navy land forces, limited land-based forces, including Special Naval Landing Forces, professional marines, Japanese marine paratroopers of World War II, marine paratrooper units, anti-aircraft defense units ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russo-Japanese War
The Russo-Japanese War (8 February 1904 – 5 September 1905) was fought between the Russian Empire and the Empire of Japan over rival imperial ambitions in Manchuria and the Korean Empire. The major land battles of the war were fought on the Liaodong Peninsula and near Shenyang, Mukden in Southern Manchuria, with naval battles taking place in the Yellow Sea and the Sea of Japan. Russia had pursued an expansionist policy in Siberia and the Russian Far East, Far East since the reign of Ivan the Terrible in the 16th century. At the end of the First Sino-Japanese War, the Treaty of Shimonoseki of 1895 had ceded the Liaodong Peninsula and Lüshun Port, Port Arthur to Japan before the Triple Intervention, in which Russia, Germany, and France forced Japan to relinquish its claim. Japan feared that Russia would impede its plans to establish a sphere of influence in mainland Asia, especially as Russia built the Trans-Siberian Railway, Trans-Siberian Railroad, began making inroads in K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dumaresq
The Dumaresq is a mechanical calculating device invented around 1902 by Lieutenant John Dumaresq of the Royal Navy. It is an analog computer that relates vital variables of the fire control problem to the movement of one's own ship and that of a target ship. It was often used with other devices, such as a Vickers range clock, to generate range and deflection data so the gun sights of the ship could be continuously set. A number of versions of the Dumaresq were produced of increasing complexity as development proceeded. Geometric principle The dumaresq relies on sliding and rotating bars and dials to represent the motion of the two ships. Normally the motion of the ship carrying the dumaresq is represented by a metal bar running above the instrument. Below the bar is a round metal plate inscribed with a coordinate plot, and an angle scale around its outer rim. The fixed bar is mounted on a bearing that allows it to be turned to represent the direction of motion of the ship, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Dictionary Of Biography
The ''Australian Dictionary of Biography'' (ADB or AuDB) is a national co-operative enterprise founded and maintained by the Australian National University (ANU) to produce authoritative biographical articles on eminent people in Australia's history. Initially published by Melbourne University Press in a series of twelve hard-copy volumes between 1966 and 2005, the dictionary has been published online since 2006 by the National Centre of Biography (NCB) at ANU, which has also published ''Obituaries Australia'' (OA) since 2010. History The ADB project began operating in 1957, although preparation work had been started in about 1954 at the Australian National University. An index was created that would be the basis of the ADB. Pat Wardle was involved in the work and, in time, she herself was included in the ADB. Staff are located at the National Centre of Biography in the History Department of the Research School of Social Sciences at the Australian National University. Since i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
