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ÅŒsumi-class Tank Landing Ship
The ''ÅŒsumi'' class (), is a Japanese tank landing ship. The class is also known as the ''Oosumi'' class. While the Japan Maritime Self-Defense Force (JMSDF) describes the ''ÅŒsumi'' class as tank landing ships (LSTs), they lack the bow doors and beaching capability traditionally associated with LSTs. Functionally, their well deck makes the ''ÅŒsumi'' class more like a dock landing ship (LSD). As of 2024 there are three ''ÅŒsumi'' vessels active with the Japanese Maritime Self-Defence Force. Design and specifications ''GlobalSecurity.org'' noted in its report on the ''ÅŒsumi'' class that "the program originated in a proposal for a small carrier for defensive and mine countermeasures (MCM) purposes, but this was deemed politically unacceptable, and the project was reworked as an amphibious ship" (actually a "Maritime Operational Transport", see below). Later the JMSDF returned to the idea with helicopter carriers with the larger . The ''ÅŒsumi'' class increases its ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsui Engineering & Shipbuilding
() is a Japanese heavy industries company. Despite its name, it no longer builds ships and now focuses mainly on production of high-value ship equipment such as Marine propulsion, engines and automated gantry cranes. Mitsui E&S is the largest supplier of gantry cranes in Japan with a market share of nearly 90 per cent, and its products are used at major ports such as Port of Long Beach, Long Beach, Port of Los Angeles, Los Angeles, Port of Mombasa, Mombasa, Saigon Port, Ho Chi Minh, and Port Klang, Klang. History Mitsui E&S was established in 1917 as the Shipbuilding Division of Mitsui & Co. with the first shipyard at Tamano, Okayama, Tamano. It built the first Japan-built diesel-propelled merchant ship, ''Akagisan Maru'' (:ja:赤城山丸, 赤城山丸) in 1924. With its success, it began manufacturing diesel engines under a license agreement with Burmeister & Wain in Denmark. In 1937, the shipyards became a separate entity within the Mitsui zaibatsu, Tama Shipyard. The com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landing Craft Air Cushion
The Landing Craft Air Cushion (LCAC) is a class of air-cushioned landing craft (hovercraft) used by the United States Navy and the Japan Maritime Self-Defense Force (JMSDF). They transport weapons systems, equipment, cargo and personnel from ship to shore and across the beach. It is to be replaced in US service by the Ship-to-Shore Connector (SSC). Design and development Two prototypes were built; JEFF A by Aerojet General in California, JEFF B by Textron Marine & Land Systems, Bell Aerospace,LCAC U.S. Navy Fact File with sea trials starting in late 1977.Silver, S., Lauriat, T. B. (1983) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Carrier
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the capital ship of a naval fleet, fleet (known as a carrier battle group), as it allows a naval force to power projection, project seaborne naval aviation, air power far from homeland without depending on local airfields for staging area, staging aerial warfare, aircraft operations. Since their inception in the early 20th century, aircraft carriers have evolved from wooden vessels used to deploy individual tethered reconnaissance balloons, to nuclear marine propulsion, nuclear-powered supercarriers that carry dozens of fighter aircraft, fighters, strike aircraft, military helicopters, airborne early warning and control, AEW&Cs and other types of aircraft such as unmanned combat aerial vehicle, UCAVs. While heavier fixed-wing aircraft such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GlobalSecurity
GlobalSecurity.org is an American independent, nonpartisan, nonprofit organization that serves as a think tank, and research and consultancy group. Focus The site is focused on national and international security issues; military analysis, systems, and strategies; intelligence matters; and space policy. History It was founded in December 2000 by John Pike, who had worked since 1983 with the Federation of American Scientists, where he directed the space policy, cyberstrategy, military analysis, nuclear resource, and intelligence resource projects. GlobalSecurity.org is headquartered in the Washington, D.C. metropolitan area in Alexandria, Virginia, and Pike remains as its director. The website's target audience includes journalists, policy-makers, scholars, political scientists, military and defense personnel, and the public. It supplies background information and developing news stories, providing online analysis and articles that analyze what are sometimes little-discusse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Maritime Self-Defence Force
The , 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 reparations. 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 Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dock Landing Ship
A dock landing ship (also called landing ship, dock or LSD) is an amphibious warfare ship with a well dock to transport and launch landing craft and amphibious vehicles. Some ships with well decks, such as the Soviet Ivan Rogov class, also have bow doors to enable them to deliver vehicles directly onto a beach (like a tank landing ship). Modern dock landing ships also operate helicopters. A ship with a well deck (docking well) can transfer cargo to landing craft in rougher seas far more easily than a ship which has to use cranes or a stern ramp. The U.S. Navy hull classification symbol for a ship with a well deck depends on its facilities for aircraft—a (modern) LSD has a helicopter deck, a landing platform dock also has a hangar, and a landing helicopter dock or landing helicopter assault has a full-length flight deck. History The LSD ( U.S. Navy hull classification for landing ship, dock) came as a result of a British requirement during the Second World War for a ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Well Deck
In traditional nautical use, well decks were decks lower than decks fore and aft, usually at the main deck level, so that breaks appear in the main deck profile, as opposed to a flush deck profile. The term goes back to the days of sail. Late-20th-century commercial and military amphibious ships have applied the term to an entirely different type of hangar-like structure, evolving from exaggerated deep "well decks" of World War II amphibious vessels, that can be flooded for lighters or landing craft. Traditional A well deck is an exposed deck ( weather deck) lower than decks fore and aft. In particular, it is one enclosed by bulwarks limiting flow of water and thus drainage so that design requirements are specific about drainage and maintenance of such drainage with that definition applying even to small vessels. The United States Coast Guard, Sector Upper Mississippi River, Small Passenger Vessel Information Package notes: Explicit requirements exist for drainage requirement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow (ship)
The bow () is the forward part of the hull of a ship or boat, the point that is usually most forward when the vessel is underway. The aft end of the boat is the stern. Prow may be used as a synonym for bow or it may mean the forward-most part of the bow above the waterline. Function A ship's bow should be designed to enable the hull to pass efficiently through the water. Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. Ideally, the bow should reduce the resistance and should be tall enough to prevent water from regularly washing over the top of it. Large commercial barges on inland waterways rarely meet big waves and may have remarkably little freeboard at the bow, whereas fast military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Maritime Self-Defense Force
The , 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 reparations. 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 Const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
