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AM Type Submarine
The , also called was a pair of large, aircraft-carrying cruiser submarines built for the Imperial Japanese Navy (IJN) during World War II. Design and description The Type AM submarines were versions of the preceding A2 class with the command facilities replaced by an enlarged aircraft hangar, which was fitted for a pair of Aichi M6A1 floatplane bombers.Layman & McLaughlin, p. 176 They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of . They had a diving depth of .Bagnasco, p. 189 The machinery was reduced in power from the A2-class boats. For surface running, the boats were powered by two diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater.Chesneau, p. 200 On the surface, the ''AM''s had a range of at ; submerged, they had a range of at . The boats were armed with six internal bow torpedo tubes and carried a total o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Ensign Of Japan
The national flag of Japan is a rectangular white banner bearing a crimson-red circle at its center. This flag is officially called the , but is more commonly known in Japan as the . It embodies the country's sobriquet: the Land of the Rising Sun. The ''Nisshoki'' flag is designated as the national flag in the Act on National Flag and Anthem, which was promulgated and became effective on 13 August 1999. Although no earlier legislation had specified a national flag, the sun-disc flag had already become the ''de facto'' national flag of Japan. Two proclamations issued in 1870 by the Daijō-kan, the governmental body of the early Meiji period, each had a provision for a design of the national flag. A sun-disc flag was adopted as the national flag for merchant ships under Proclamation No. 57 of Meiji 3 (issued on 27 February 1870), and as the national flag used by the Navy under Proclamation No. 651 of Meiji 3 (issued on 27 October 1870). Use of the ''Hinomaru'' was severely restric ... [...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 mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Aircraft Carrier
A submarine aircraft carrier is a submarine equipped with aircraft for observation or attack missions. These submarines saw their most extensive use during World War II, although their operational significance remained rather small. The most famous of them were the Japanese s and the , although small numbers of similar craft were built for other nations' navies as well. Most operational submarine aircraft carriers, with the exception of the ''I-400'' and AM classes, used their aircraft for reconnaissance and observation. This is in contrast to the typical surface aircraft carrier, whose main function is serving as a base for offensive aircraft. Early history (World War I) Germany was the first nation to experiment with submarine aircraft carriers, initiated by the Imperial German Naval Air Service commander Oberleutnant zur See Friedrich von Arnauld de la Perière who commanded a unit of two Friedrichshafen FF.29 reconnaissance seaplanes in Zeebrugge. One of the first U-boa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
I-400 Class Submarine
The Imperial Japanese Navy (IJN) submarines were the largest submarines of World War II and remained the largest ever built until the construction of nuclear ballistic missile submarines in the 1960s. The IJN called this type of submarine . The type name was shortened to . They were submarine aircraft carriers able to carry three Aichi M6A ''Seiran'' aircraft underwater to their destinations. They were designed to surface, launch their planes, then quickly dive again before they were discovered. They also carried torpedoes for close-range combat. The ''I-400'' class was designed with the range to travel anywhere in the world and return. A fleet of 18 boats was planned in 1942, and work started on the first in January 1943 at the Kure, Hiroshima arsenal. Within a year the plan was scaled back to five, of which only three ( I-400 at Kure, and and I-402 at Sasebo) were completed. Origins The ''I-400'' class was the brainchild of Admiral Isoroku Yamamoto, Commander-in-Chief of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaii Undersea Research Laboratory
The Hawaii Undersea Research Laboratory (HURL) is a regional undersea research program within the School of Ocean and Earth Sciences and Technology (SOEST) at University of Hawaii at Manoa, in Honolulu. It is considered one of the more important of the independently run undersea research laboratories in the U.S. HURL operates two deep diving submersibles, the ''Pisces IV'' and ''Pisces V'' and specializes in supporting scientific ocean research and exploration. HURL is actively involved in monitoring deep-sea ecosystems, including coral habitats and fisheries, and conducts maritime archaeology research including documenting World War II wreckage from the Attack on Pearl Harbor in 1941. Science Dive Program The Hawaii Undersea Research Laboratory was founded in cooperation with U. S. government's National Oceanic and Atmospheric Administration (NOAA) in 1980. HURL became a regional center in NOAA's National Undersea Research Program (NURP). The University of Hawaii had been don ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yokosuka
is a city in Kanagawa Prefecture, Japan. , the city has a population of 409,478, and a population density of . The total area is . Yokosuka is the 11th most populous city in the Greater Tokyo Area, and the 12th in the Kantō region. The city is host to United States Fleet Activities Yokosuka. Geography Yokosuka occupies most of Miura Peninsula, and is bordered by the mouth of Tokyo Bay to the east and Sagami Bay on the Pacific Ocean on the west. Surrounding municipalities * Kanazawa-ku, Yokohama * Miura * Hayama * Zushi History Pre-modern period Archaeologists have found stone tools and shell middens from the Japanese Paleolithic period and ceramic shards from the Jōmon and Kofun periods at numerous locations in the area. During the Heian period, local warlord Muraoka Tamemichi established Kinugasa Castle in 1063. He became the ancestor of the Miura clan, which subsequently dominated eastern Sagami Province for the next several hundred years. The Miura clan supported ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Anzio (CVE-57)
USS ''Anzio'' (ACV/CVE/CVHE-57), was a of the United States Navy that saw service during World War II in the Pacific War. Originally classified as an auxiliary aircraft carrier ACV-57, the vessel was laid down in 1942, in Vancouver, Washington, by the Kaiser Shipbuilding Company and initially named ''Alikula Bay'', then renamed ''Coral Sea'' and redesignated CVE-57 in 1943. ''Coral Sea'' took part in naval operations supporting attacks on the Gilbert and Marshall Islands, New Guinea and the Marianas Islands. In September 1944, she was renamed ''Anzio''. As ''Anzio'', the escort carrier took part in assaults on the Bonin Islands and Okinawa. Following the cessation of hostilities in 1945, ''Anzio'' was among the escort carriers used in Operation Magic Carpet, returning US soldiers to the United States. Following this service, she was laid up in reserve at Norfolk, Virginia, in 1946. The escort carrier was redesignated CVHE-57 on 15 June 1955, before being sold for scrap in 1959. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crane (machine)
A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy objects and transporting them to other places. The device uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in transportation for the loading and unloading of freight, in construction for the movement of materials, and in manufacturing for the assembling of heavy equipment. The first known crane machine was the shaduf, a water-lifting device that was invented in ancient Mesopotamia (modern Iraq) and then appeared in ancient Egyptian technology. Construction cranes later appeared in ancient Greece, where they were powered by men or animals (such as donkeys), and used for the construction of buildings. Larger cranes were later developed in the Roman Empire, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conning Tower
A conning tower is a raised platform on a ship or submarine, often armored, from which an officer in charge can conn the vessel, controlling movements of the ship by giving orders to those responsible for the ship's engine, rudder, lines, and ground tackle. It is usually located as high on the ship as practical, to give the conning team good visibility of the entirety of the ship, ocean conditions, and other vessels. The naval term "conn" may derive from the Middle English ''conne'' (study, become acquainted with) or French ''conduire'' from Latin ''conducere'' (conduct). Surface ships On surface ships, the conning tower was a feature of all battleships and armored cruisers from about 1860 to the early years of World War II. Located at the front end of the superstructure, the conning tower was a heavily armored cylinder, with tiny slit windows on three sides providing a reasonable field of view. Designed to shield just enough personnel and devices for navigation during battle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called naval mine, mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with naval artillery, large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface combatant , surface vessels, submarines/submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Tube
A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for a specific type of torpedo, while submarine torpedo tubes are general-purpose launchers, and are often also capable of deploying naval mine, mines and cruise missiles. Most modern launchers are standardized on a diameter for light torpedoes (deck mounted aboard ship) or a diameter for heavy torpedoes (underwater tubes), although other sizes of torpedo tube have been used: see Torpedo#Classes and diameters, Torpedo classes and diameters. Submarine torpedo tube A submarine torpedo tube is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric pressure within t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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