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Mikura-class Escort Ship
The were a class of eight ''kaibōkan'' escort vessels built for the Imperial Japanese Navy during World War II. Five of the eight ships were sunk during the war. The class was also referred to by internal Japanese documents as the . Background The ''Mikura''-class ''kaibōkan'', as with the torpedo boat, was a consequence of the 1930 London Naval Treaty, which placed limitations on the total destroyer tonnage the Imperial Japanese Navy was permitted. One way in which the treaty could be circumvented was to use a loophole in the treaty which permitted ships of between 600 and 2,000 tons, with no more than four guns over 76mm, no torpedoes, and with a maximum speed of no more than 20 knots. A new class of vessel was designed to use this loophole, and was given the obsolete designation of ''kaibōkan'' (''Kai'' = sea, ocean, ''Bo'' = defence, ''Kan'' = ship), which had previously been used to designate obsolete battleships which had been reassigned to coastal defense duties. The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escorteur
The French term ''Escorteur'' (Escort Ship) appeared during the Second World War to designate a warship, of a medium or light displacement, whose mission was to protect ocean convoys and naval squadrons from attacks by submarines. This role was in general handled by a destroyer escort such as the and es built in the United States, or a built by the United Kingdom, or even a built by the United Kingdom, Canada and Australia. The Imperial Japanese Navy used the denomination of '' Kaibokan'' for this type of naval ship. The escorteurs of the French Navy In the immediate aftermath of the war, to fulfill the task of naval escorts, the French Navy was limited to a fleet of ''torpilleur'' and ''contre-torpilleur'' (otherwise known as destroyers), along with a number of avisos. They were later joined by several naval ships of German and Italian origin awarded as war reparations, and several escort ''bâtiments'' originated from the United Kingdom and the United States, all unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p.5. This is accomplished by means of its "draft marks" (or "load lines"). A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hitachi Zosen Corporation
is a major Japanese industrial and engineering corporation. It produces waste treatment plants, industrial plants, precision machinery, industrial machinery, steel mill process equipment, steel structures, construction machinery, tunnel boring machines, and power plants. Despite its name, Hitachi Zosen, of which last word literally means shipbuilding, no longer builds ships, having spun off the business to Universal Shipbuilding Corporation in 2002, nor is it a ''keiretsu'' company of Hitachi any longer. History Hitachi Zōsen's origins go back to April 1, 1881, when British entrepreneur Edward H. Hunter established in Osaka to develop the Japanese steel-making and shipbuilding industry. Hunter had come to Japan in 1865 and had established the Onohama Shipyard in Kobe before moving to Osaka and establishing a new shipyard at the junction of the Nakatsu and Aki rivers which could construct ships of under 1000 tons displacement. His first vessel, the ''Hatsumaru'' was launched in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shikoku
is the smallest of the four main islands of Japan. It is long and between wide. It has a population of 3.8 million (, 3.1%). It is south of Honshu and northeast of Kyushu. Shikoku's ancient names include ''Iyo-no-futana-shima'' (), ''Iyo-shima'' (), and ''Futana-shima'' (), and its current name refers to the four former provinces that made up the island: Awa, Tosa, Sanuki, and Iyo. Geography Shikoku Island, comprising Shikoku and its surrounding islets, covers about and consists of four prefectures: Ehime, Kagawa, Kōchi, and Tokushima. Across the Seto Inland Sea lie Wakayama, Osaka, Hyōgo, Okayama, Hiroshima, and Yamaguchi Prefectures on Honshu. To the west lie Ōita and Miyazaki Prefectures on Kyushu. Shikoku is ranked as the 50th largest island by area in the world. Additionally, it is ranked as the 23rd most populated island in the world, with a population density of 193 inhabitants per square kilometre (500/sq mi). Mountains running east and west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JFE Steel
JFE Steel () is the second largest Japanese steel manufacturer. The company was created in 2002 through the merger of the steel manufacturing business of Kawasaki Steel and NKK (Nihon Kokan). It is owned by JFE Holdings, which is listed on the Tokyo Stock Exchange. Recent Mergers and Spinoffs :For the history of JFE Steel, refer to JFEスチールの沿革 (History of JFE Steel) JFE Steel was created in 2002 as Kawasaki Steel absorbed the steel making business of Nihon Kokan (NKK). At the same time, NKK's engineering business absorbed Kawasaki Steel's engineering business to form JFE Engineering ( JFEエンジニアリング). In the same year of 2002, NKK's shipbuilding business was spun off as a separate entity, which in the same year merged with Hitachi Shipbuilding to form Universal Shipbuilding, that then in 2013 was merged with IHI's shipbuilding business to become Japan Marine United Corporation. After these mergers and spinoffs, JFE Steel is the second largest steel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Of China Navy
The Republic of China Navy (ROCN; ), also called the ROC Navy and colloquially the Taiwan Navy, is the maritime branch of the Republic of China Armed Forces (ROCAF). The service was formerly commonly just called the Chinese Navy during World War II and prior to the ROC's retreat from the mainland. While still sometimes used especially in domestic circles, it is now not as often used internationally due to the current ambiguous political status of Taiwan and to avoid confusion with the People's Liberation Army Navy of the People's Republic of China (PRC). Today, the ROC Navy's primary mission is to defend the remaining ROC's territories and the sea lanes under its jurisdiction against any possible blockades, attacks, or invasion. Operations include maritime patrols in the Taiwan Strait and surrounding waters, as well as readiness for counter-strike and counter-invasion operations during wartime. The Republic of China Marine Corps (ROCMC) also functions as a branch of the Navy. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East China Sea
The East China Sea is an arm of the Western Pacific Ocean, located directly offshore from East China. It covers an area of roughly . The sea’s northern extension between mainland China and the Korean Peninsula is the Yellow Sea, separated by an imaginary line between the eastern tip of Qidong at the Yangtze River estuary and the southwestern tip of South Korea's Jeju Island. The East China Sea is bounded in the east and southeast by the middle portion of the first island chain off the eastern Eurasian continental mainland, including the Japanese island of Kyushu and the Ryukyu Islands, and in the south by the island of Taiwan. It connects with the Sea of Japan in the northeast through the Korea Strait, the South China Sea in the southwest via the Taiwan Strait, and the Philippine Sea in the southeast via gaps between the various Ryukyu Islands (e.g. Tokara Strait and Miyako Strait). Most of the East China Sea is shallow, with almost three-fourths of it being less tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South China Sea
The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Philippines (mainly Luzon, Mindoro and Palawan), and in the south by Borneo, eastern Sumatra and the Bangka Belitung Islands, encompassing an area of around . It communicates with the East China Sea via the Taiwan Strait, the Philippine Sea via the Luzon Strait, the Sulu Sea via the straits around Palawan (e.g. the Mindoro and Balabac Straits), the Strait of Malacca via the Singapore Strait, and the Java Sea via the Karimata and Bangka Straits. The Gulf of Thailand and the Gulf of Tonkin are also part of the South China Sea. The shallow waters south of the Riau Islands are also known as the Natuna Sea. The South China Sea is a region of tremendous economic and geostrategic importance. One-third of the world's maritime shipp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paravane (weapon)
The paravane , a form of towed underwater "glider" with a warhead that was used in anti-submarine warfare, was developed from 1914–16 by Commander C. Vivian Usborne and Lieutenant C. Dennistoun Burney, funded by Sir George White, founder of the Bristol Aeroplane Company. It was used against naval mines and submarines. Usage Initially developed to destroy naval mines, the paravane is strung out and streamed alongside the towing ship, often from the bow, but in many WWII applications aboard minesweepers, the paravane was towed from the stern. The wings of the paravane pull it away laterally from the towing ship, placing a tension on the tow cable. If the tow cable snags the cable anchoring a mine then the anchoring cable is cut by jaws on the paravane, allowing the mine to float to the surface, where it is destroyed by gunfire. If the anchor cable fails to part, the mine and the paravane are brought together and the mine explodes against the paravane. The cable can then be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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