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No.13-class Submarine Chaser
The were a class of submarine chasers of the Imperial Japanese Navy (IJN), serving during and after World War II; there were three sub classes, however the IJN's official document calls all of them the ''No.13'' class. Background *In 1938 the Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ... strengthened its Pacific Ocean Fleet, increasing the number of submarines it possessed; the ''No.13'' class was designed to counter this potential threat to Japanese shipping. Ships in classes ''No.13'' class *Project number K8. 15 vessels were built in 1939-42 under the Maru 4 Programme (Ship # 180 – 183) and the Maru Rin Programme (Ship # 184 – 194). And after the Maru Rin Programme vessels were equipped with a kitchen and food storage between bridge and the chimney fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fujinagata Shipyards
was a shipyard and railroad car manufacturer in Osaka, Japan. History Fujinagata claimed to have been founded in 1689, making it one of the oldest shipbuilders in Japan. Originally called ''Hyōgo-ya'', and located in central Osaka, it was contracted in 1854 by officials representing the Tokugawa shogunate to produce sail warships for the new Tokugawa feudal navy. In 1869, with the assistance of German engineers, the western-style warships were designed and produced. After the Meiji Restoration, the shipyards concentrated on civilian applications, and in 1870 launched its first western-style commercial steam vessel. This was a first for a privately held shipbuilder in Japan. In 1874, the shipyards were relocated to Nishi-ku, Osaka and the company name officially changed to Fujinagata Shipyards. In 1884, the main shipyards was relocated to Taisho-ku, Osaka. In 1900, Fujinagata completed its first all-metal construction merchant vessel; the No.2 ''Nagata Maru''. In 1917, new s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temporal Naval Armaments Supplement Programme (Japan, 1940)
The is one of the armaments expansion plan of the Imperial Japanese Navy (IJN). Background In October 1940, the IJN schemed building of the submarines and auxiliary vessels because there was a shortage of them. Table of vessels See also * 1st Naval Armaments Supplement Programme (Maru 1 Keikaku, 1931) * 2nd Naval Armaments Supplement Programme (Maru 2 Keikaku, 1934) * 3rd Naval Armaments Supplement Programme (Maru 3 Keikaku, 1937) *4th Naval Armaments Supplement Programme (Maru 4 Keikaku, 1939) * Rapidly Naval Armaments Supplement Programme (Maru Kyū Keikaku, 1941) * Additional Naval Armaments Supplement Programme (Maru Tui Keikaku, 1941) * 5th Naval Armaments Supplement Programme (Maru 5 Keikaku, 1941) *6th Naval Armaments Supplement Programme (Maru 6 Keikaku, 1942) * Modified 5th Naval Armaments Supplement Programme (Kai-Maru 5 Keikaku, 1942) * Wartime Naval Armaments Supplement Programme (Maru Sen Keikaku, 1944) References *''Rekishi Gunzō series'', Gakken (Japan) *''The Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4th Naval Armaments Supplement Programme (Japan, 1939)
The was one of the armaments expansion plan of the Imperial Japanese Navy (IJN). Background In 1939, the IJN started new naval armaments expansion plan. It extended to 80 warships and 75 Naval Air Groups by 1.6 billion JPY. Table of vessels Notes References * Senshi Sōsho Vol.31, ''Naval armaments and war preparation (1), "Until November 1941"'', Asagumo Simbun (Japan), November 1969 See also * 1st Naval Armaments Supplement Programme (Maru 1 Keikaku, 1931) * 2nd Naval Armaments Supplement Programme (Maru 2 Keikaku, 1934) * 3rd Naval Armaments Supplement Programme (Maru 3 Keikaku, 1937) * Temporal Naval Armaments Supplement Programme (Maru Rin Keikaku, 1940) * Rapidly Naval Armaments Supplement Programme (Maru Kyū Keikaku, 1941) * Additional Naval Armaments Supplement Programme (Maru Tui Keikaku, 1941) * 5th Naval Armaments Supplement Programme (Maru 5 Keikaku, 1941) * 6th Naval Armaments Supplement Programme 6 (six) is the natural number following 5 and preceding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean Fleet (Russia)
, image = Great emblem of the Pacific Fleet.svg , image_size = 150px , caption = Russian Pacific Fleet Great emblem , dates = 1731–present , country = , allegiance = (1703–1917) (1922–1991) (1991–present) , branch = Russian Navy , type = , role = At sea nuclear deterrence;Naval warfare; Amphibious military operations;Combat patrols in the Pacific/Arctic;Naval presence/diplomacy missions in the Pacific and elsewhere , size = c. 46 Surface Warships (major surface units, light corvettes, mine warfare, amphibious) plus support ships/auxiliaries c. 23-24 Submarines (of which about 2/3 active as of 2022) , command_structure = Russian Armed Forces , garrison = Fokino (HQ)Petropavlovsk-Kamchatsky Vilyuchin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national republics; in practice, both its government and its economy were highly centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian SFSR. Other major cities included Leningrad (Russian SFSR), Kiev (Ukrainian SSR), Minsk ( Byelorussian SSR), Tashkent (Uzbek SSR), Alma-Ata (Kazakh SSR), and Novosibirsk (Russian SFSR). It was the largest country in the world, covering over and spanning eleven time zones. The country's roots lay in the October Revolution of 1917, when the Bolsheviks, under the leadership of Vladimir Lenin, overthrew the Russian Provisional Government ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Chaser
A submarine chaser or subchaser is a small naval vessel that is specifically intended for anti-submarine warfare. Many of the American submarine chasers used in World War I found their way to Allied nations by way of Lend-Lease in World War II. Submarine chaser variants U.S. Navy submarine chasers were designed specifically to destroy German submarines in World War I, and Japanese and German submarines in World War II. The small SC-1-class submarine chasers of the design used in World War I carried the hull designator SC (for Submarine Chaser). Their main weapon was the depth charge. They also carried machine guns and anti-aircraft guns. The similar-sized SC-497-class was built for World War II. Also in World War II, larger PC-461-class submarine chasers used the PC hull classification symbol (for Patrol, Coastal).Gardiner and Chesneau, pp. 71, 152-154 Class relationships: * 438 (98t, wooden hull) * 343 (450t, steel hull) * 68 (850t, steel hull) ** used in similar ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and SODAR (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low (infrasonic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depth Charge
A depth charge is an anti-submarine warfare (ASW) weapon. It is intended to destroy a submarine by being dropped into the water nearby and detonating, subjecting the target to a powerful and destructive Shock factor, hydraulic shock. Most depth charges use explosive, high explosive charges and a fuze set to detonate the charge, typically at a specific depth. Depth charges can be dropped by ships, patrol aircraft, and helicopters. Depth charges were developed during World War I, and were one of the first viable methods of attacking a submarine underwater. They were widely used in World War I and World War II, and remained part of the anti-submarine arsenals of many navies during the Cold War, during which they were supplemented, and later largely replaced, by anti-submarine homing torpedoes. A depth charge fitted with a nuclear warhead is also known as a "nuclear depth bomb". These were designed to be dropped from a patrol plane or deployed by an anti-submarine missile from a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hotchkiss M1929 Machine Gun
The 13.2 mm Hotchkiss machine gun model 1929, often simplified to Hotchkiss M1929 machine gun, and the like, was a heavy machine gun designed and manufactured by Hotchkiss et Cie from the late 1920s until World War II which saw service with various nations' forces, including Italy and Japan where the gun was built under license. Development In the late 1920s, Hotchkiss proposed a range of anti-aircraft automatic weapons in the 13.2, 25 and 37 mm calibers. They were all based on the same type of Gas-operated reloading, gas-operated action, similar to the one used in the 8 mm Hotchkiss Mle 1914 machine gun, which had proven extremely reliable during World War I and was still in service. This led to the production of the 13.2 mm Hotchkiss machine gun model 1929, often called the Hotchkiss M1929. Performance The Hotchkiss M1929 machine gun had a Rate of fire#Cyclic rate, cyclic rate of fire of 450 rounds per minute, but their practical sustained rate of fire wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
