|
JDS Yukikaze
JDS ''Yukikaze'' (DD-102) was the second ship of Harukaze-class destroyers, and the second destroyer of the Japanese Maritime Self Defense Force to be built in Japan since the end of World War II. Construction and career The ship was laid down at the Mitsubishi shipyard in Nagasaki on 17 December 1954, launched on 20 August 1955 and commissioned on 31 July 1956 with the hull number (DD-102). She was put into service on 31 July, and was incorporated into the Yokosuka District Force. On 1 April 1957, it became the flagship of the 2nd Self-Defense Fleet and the flagship of the 1st Escort Group in place of the guard ship JDS ''Keyaki''. From 10 January – 26 March 1959, a special renovation work was carried out at the Ishikawajima Heavy Industries Tokyo Factory, and four rear depth charge projectors and one depth charge projection rail were removed, and Mk.2 was short. Equipped with one torpedo launcher on each side. Replaced anti-submarine active sonar from QHBa to SQS-11A a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Destroyer Yukikaze (1939)
was a in service with the Imperial Japanese Navy during World War II. She was the only member of her class to survive the war, and did so without suffering any major damage. Following the war, the ship was transferred to the Republic of China Navy, where she was renamed ''Dan Yang'' ( DD-12) and served until 1966, before being scrapped in 1970. Design and description The ''Kagerō'' class was an enlarged and improved version of the preceding of destroyers. Their crew numbered 240 officers and enlisted men. The ships measured overall, with a beam of and a draft of . They displaced at standard load and at deep load.Whitley, pp. 200–01 The ships had two Kampon geared steam turbines, each driving one propeller shaft, using steam provided by three Kampon water-tube boilers. The turbines were rated at a total of for a designed speed of . The ships had a range of at a speed of .Jentschura, Jung & Mickel, p. 148 The main armament of the ''Kagerō'' class consisted of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/SPS-6
AN/SPS-6 is a two-dimensional radar manufactured by Bendix and Westinghouse Electric. It was used by the US Navy as a first-generation air-search radar after World War II, and was widely exported to allies. In addition, the improved AN/SPS-12 is the derivative types developed in other countries. AN/SPS-6 This machine was developed as a successor to the SR-3 or SR-6 radar, which is an L Band air search radar that has been used in the past. The development is said to have been influenced by AN/TPS-1, which was a portable air radar for the ground. As the antenna, a parabolic antenna that uses a horn antenna as the primary radiation source is adopted. In addition, the modular design allows the configuration to be expanded or contracted according to the ship on which it is mounted. Initially, the following three models existed. AN/SPS-6 The antenna dimensions were 18 ft (5,500 mm) x 5 ft (1,500 mm), the beamwidth was 3 ° x 10 °, and it could be detected at 8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yokosuka Naval Arsenal
was one of four principal naval shipyards owned and operated by the Imperial Japanese Navy, and was located at Yokosuka, Kanagawa prefecture on Tokyo Bay, south of Yokohama. History In 1866, the Tokugawa shogunate government established the ''Yokosuka Seisakusho'', a military arsenal and naval base, with the help of foreign engineers, including the French naval architect Léonce Verny. The new facility was intended to produce modern, western-style warships and equipment for the Tokugawa navy. The construction of the arsenal was an important first step for the modernization of Japan's industry. Modern buildings, an aqueduct, foundry, brick factories, technical schools to train Japanese technicians were established. After the Boshin War and the Meiji Restoration, the new Meiji government took over control of the facility in 1871, renaming it the ''Yokosuka Zosenjo'' (Yokosuka Shipyards). The first dry dock was opened in 1871, and is still in operation today. Japan's first d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull Number
Hull number is a serial identification number given to a boat or ship. For the military, a lower number implies an older vessel. For civilian use, the HIN is used to trace the boat's history. The precise usage varies by country and type. United States usage Civilian use For civilian craft manufactured in the United States, the hull number is given to the vessel when it is built and forms part of the hull identification number, which uniquely identifies the vessel and must be permanently affixed to the hull in at least two places. A Hull Identification Number (HIN) is a unique set of 12 characters, similar to the Vehicle Identification Number which is found on automobiles. In 1972, The United States Coast Guard was asked to create a standardized format for HINs to allow for better tracking of accidents and history of boats. This HIN format is as follows: The first three characters consist of the Manufacturers Index Code (MIC) and should only be letters. The following five character ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Commissioning
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 placing a warship in active duty with its country's military forces. The ceremonies involved are often rooted in centuries-old naval tradition. Ship naming and launching endow a ship hull with her identity, but many milestones remain before she is completed and considered ready to be designated a commissioned ship. The engineering plant, weapon and electronic systems, galley, and other equipment required to transform the new hull into an operating and habitable warship are installed and tested. The prospective commanding officer, ship's officers, the petty officers, and seamen who will form the crew report for training and familiarization with their new ship. Before commissioning, the new ship undergoes sea trials to identify any deficiencies needing corre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defense (Japan)
The is an executive department of the Government of Japan responsible for preserving the peace and independence of Japan, and maintaining the country’s national security and the Japan Self-Defense Forces. The ministry is headed by the Minister of Defense, and is the largest ministry in the Japanese government. The ministry is headquartered in Ichigaya, Shinjuku, Tokyo, and is required by Article 66 of the Constitution to be completely subordinate to civilian authority. Its head has the rank of Minister of State. He is assisted by two vice ministers, one parliamentary and one administrative; and the internal bureaus. The highest figure in the command structure is the Prime Minister, who is responsible directly to the National Diet. The MOD, alongside the Ministry of Foreign Affairs, work on crafting Japanese security policy. In a national emergency, the Prime Minister is authorized to order the various components of the Japan Self-Defense Forces (JSDF) into action, subj ... [...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] |
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north toward the East China Sea, Philippine Sea, and Taiwan in the south. Japan is a part of the Ring of Fire, and spans Japanese archipelago, an archipelago of List of islands of Japan, 6852 islands covering ; the five main islands are Hokkaido, Honshu (the "mainland"), Shikoku, Kyushu, and Okinawa Island, Okinawa. Tokyo is the Capital of Japan, nation's capital and largest city, followed by Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, and Kyoto. Japan is the List of countries and dependencies by population, eleventh most populous country in the world, as well as one of the List of countries and dependencies by population density, most densely populated and Urbanization by country, urbanized. About three-fourths of Geography of Japan, the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Maritime Self Defense Force
, abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN) after World War II. The JMSDF has a fleet of 154 ships, 346 aircraft and 50,800 personnel. History Origin Following Japan's defeat in World War II, the Imperial Japanese Navy was dissolved by the Potsdam Declaration acceptance. Ships were disarmed, and some of them, such as the battleship , were taken by the Allied Powers as reparation. The remaining ships were used for repatriation of the Japanese soldiers from abroad and also for minesweeping in the area around Japan, initially under the control of the ''Second Bureau of the Demobilization Ministry''. The minesweeping fleet was eventually transferred to the newly formed Maritime Safety Agency, which helped maintain the resources and expertise of the navy. Japan's 1947 Constitution w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harukaze-class Destroyer
The ''Harukaze''-class destroyer was the first indigenous post-World War II Japanese destroyer class. Its main mission was anti-submarine warfare. Almost all equipment was supplied from the United States according to the U.S. and Japan Mutual Defense Assistance Agreement. Sensor systems on-board was standard equipment in the U.S. Navy at that time, for example, the AN/SPS-6 air-search radar, the AN/SPS-5 surface-search radar, the QHB search sonar, the QDA attack sonar. Three 5-inch/38 caliber Mark 12 guns were mounted on Mark 30 single mounts, and controlled by a Mark 51 director. The JMSDF wasn't satisfied with performance of the director, so later the Mark 51 was replaced by the Swedish advanced GFCS developed by Contraves (''Harukaze'') or American Mark 57 (''Yukikaze''). At the same time, K-guns and depth charge racks were reduced by half and replaced by Mark 32 torpedo The Mark 32 torpedo was the first active acoustic antisubmarine homing torpedo in United States Navy ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AN/SQS-26
AN/SQS-26 was a United States Navy surface ship, bow mounted, low frequency, active/passive sonar developed by the Naval Underwater Sound Laboratory and built by General Electric and the EDO Corporation. At one point, it was installed on 87 US Navy warships from the 1960s to the 1990s and may still be in use on ships transferred to other navies. Capabilities The AN/SQS-26 weighed . It could be operated as a passive sonar on the 1.5 kHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that on ... frequency or as an active sonar at 3–4 kHz. Its maximum output was 240 kW and it had a range from . It had direct path, bottom reflected, passive and convergence zone (CZ) capabilities.Stefan Terzibaschitsch: ''Kampfsysteme der U.S. Navy''. Koehler, Hamburg (Germany), 2001, p. 212. Varia ... [...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] |
_approach.jpg "Click for more on -> Hull Number")
_underway_2009.jpg "Click for more on -> Ship Commissioning")
