|
Ha-101-class Submarine
The was a transport submarine built for the Imperial Japanese Navy (IJN) during World War II. The IJN planned to build 12 boats, but only 10 vessels were completed by the end of the war. The IJN called these submarines . The type name, was shortened to .The read as "Sen'yu-Shō", but the read as "Sen'yu-Ko-gata" in Japanese. Several boats were converted to tankers or mother ships for the midget submarines. Design and description The ''Ha-101''-class submarines were designed as small, cheap transport submarines to resupply isolated island garrisons. They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of . They were designed to carry of cargo.Carpenter & Dorr, p. 140 For surface running, the boats were powered by a single diesel engine that drove one propeller shaft. When submerged the propeller was driven by a electric motor. They could reach on the surface and underwater.Chesneau, p. 204 On the surface, the ''Ha-101''s had a r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Cruiser Ibuki (1943)
The Japanese cruiser was a heavy cruiser built for the Imperial Japanese Navy (IJN) during World War II. The lead ship of her class of two ships, she was ordered to be converted into a light aircraft carrier in 1943 before completion to help replace the aircraft carriers sunk during the Battle of Midway in mid-1942. The conversion was delayed and finally stopped in March 1945 in order to concentrate on building small submarines. ''Ibuki'' was scrapped in the Sasebo Naval Arsenal beginning in 1946. Background The ''Ibuki''-class cruisers were ordered in the Rapid Naval Armaments Supplement Programme of November 1941, and they were slightly improved versions of the preceding after those ships had been upgraded during the late 1930s. After the heavy losses suffered in the Battle of Midway in early June 1942, the IJN reorganized its current building programs to emphasize aircraft carrier construction. ''Ibuki'', which had only been laid down a few months earlier, had all work sus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Classes
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, blockade running, nuclear deterrence, reconnaissance, conventional land attack (for example, using a cruise missile), and covert insertion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senshi Sōsho
The , also called the , is the official military history of Imperial Japan's involvement in the Pacific War from 1937 to 1945. The task of compiling the official account of the Japanese involvement in World War II began in October 1955 with the opening of the War History Office (the present Military History Department of the “National Institute for Defense Studies”, or NIDS, of Japan's Ministry of Defense in Tokyo, Japan). Its main function was to serve as educational research material for the Self-Defense Forces. The office was led by Colonel Nishiura Susumu, a senior official in the War Ministry during the war. The publisher was Asagumo Shimbunsha. The history, comprising 102 volumes, the first of which was published in 1966 and the final one in 1980, was compiled from Imperial Japanese Army, Imperial Japanese Navy, other Japanese government records, and personal diaries and records which survived Japan's defeat in the war. Many of the records were initially confiscated b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Army Railways And Shipping Section
The Imperial Japanese Army Railway and Shipping Section was the logistics unit of the Imperial Japanese Army charged with shipping personnel, material and equipment from metropolitan Japan to the combat front overseas. __TOC__ Railway Under it were the Railway Ministry, the South Manchuria Railway, Chinese Eastern Railway (later absorbed by the Manchukuo National Railway), the North China Transportation Company, the Central China Railway, Southern Asian Railway facilities amongst Civil Merchants shipping transports. It also worked with the Imperial Japanese Navy Shipping Services. The section was commanded by Okikatsu Arao, Sōsaku Suzuki and other Army officers. The section comprised the First (Operations) and Third (Transportation and Communications) bureaux, the 2nd (Operations) and 10th (Shipping and Railways) sections. To conduct operations on rivers and at sea the Japanese Army produced many kinds of vessel, i.e. landing craft, motorboats, gun boats, landing ships etc. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type 4 Ka-Tsu
The was a Japanese amphibious landing craft of World War II. The first prototype was completed in late 1943 and trials were conducted off Kure in March 1944. History Japan's combat experience in the Solomon Islands in 1942 which revealed the difficulty of resupplying Japanese forces in such situations prompted the IJN to commence an amphibious tractor program in 1943, as the Ka-Tsu, which was designed by Commander Hori Motoyoshi of the Kure Naval Yard. Design The Ka-Tsu's primary purpose was to transport cargo and/or troops ashore. It had light armored shielding with a maximum of 10 mm. Its engine compartment and electric final drives were hermetically sealed, as it was intended to be launched from a submarine. The twin drive propeller shafts were designed to retract "into their ducts" once the vehicle reached the beach. The first prototype was completed in late 1943 and trials were conducted off Kure in March 1944. By the time development had been completed, it was pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kii Channel
The , also called the Kii Strait, is a strait separating the Japanese island of Shikoku from the Kii Peninsula on the main island of Honshū. This strait connects the Inland Sea with the Pacific Ocean. The name of the strait derives from Kii Province, a former province on the Kii Peninsula. The strait is surrounded by Tokushima Prefecture on Shikoku, Wakayama Prefecture on Honshū, and the southern coast of Awaji Island in Hyōgo Prefecture. It is connected to Osaka Bay via the Kitan Strait and to Harima Nada (the eastern part of the Inland Sea) by the Naruto Strait is a strait between Awaji Island and Shikoku in Japan. It connects Harima Nada, the eastern part of the Inland Sea and the Kii Channel. A famous feature of the strait is the Naruto whirlpools. Ōnaruto Bridge, the southern part of the Kobe-A .... Western maps from the 19th century also refer to this waterway as the Linschoten Strait.Taylor, Bayard. ''Japan, In Our Day''. New York: Scribner, Armstrong, and C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gotō Islands
The are Japanese islands in the East China Sea, off the western coast of Kyūshū. They are part of Nagasaki Prefecture. Geography There are 140 islands, including five main ones: , , , , and . The group of islands runs approximately from Osezaki Lighthouse, Fukue Island to Tsuwazaki Lighthouse, Nakadōri Island. Its center is near Naru Island at about . To the north is Tsushima Island in the Tsushima Strait and to the east is Kyūshū and the rest of Nagasaki Prefecture. It is about from the port of Nagasaki. The Tsushima Current (a branch of the Kuroshio) passes around the islands. The southern of the two principal islands, Fukue, measures approximately north-to-south by east-to-west; the northern, Nakadōri Island, measures approximately north-to-south by east-to-west at its widest point. Most of Nakadōri Island, however, is quite narrow, measuring less than wide for much of its length. Some dome-shaped hills command the old castle town of Fukue. The islands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimizu-ku, Shizuoka
is the easternmost of the three wards of the city of Shizuoka in Shizuoka Prefecture, Japan. History Shimizu-ku was created on April 1, 2005, when Shizuoka became a city designated by government ordinance (a "designated city"). Its area is almost identical to former Shimizu city, which merged with Shizuoka city on April 1, 2003. Shizuoka annexed the town of Kanbara from Ihara District on March 31, 2006, and the town of Yui on November 1, 2008, adding these former municipalities to Shimizu-ku. Since ancient times, Shimizu thrived as a harbor town due to its good natural harbor. In addition, five post stations of Tōkaidō were located in Shimizu: (Kanbara-juku, Okitsu-juku, Ejiri-juku, and Yui-shuku, all of which brought prosperity to the area during the Edo period. After the Meiji Restoration, an Imperial decree in July 1899 established Shimizu as an open port for trading with the United States and the United Kingdom.US Department of State. (1906) ''A digest of international ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type 3 Submergence Transport Vehicle
The was a class of transport submarines built for the Imperial Japanese Army (IJA) during World War II. The IJA called them . Design and construction The six-month-long Guadalcanal campaign came to an end in early February 1943, when the last Imperial Japanese Army (IJA) forces withdrew from Guadalcanal.Mühlthaler, p. 329. Later that month, the IJA′s 10th Army Staff Headquarters, which was responsible for all IJA-operated ships, decided it would need to develop its own transport submarine — which it provisionally designated "transport boat" (''Yuso-tei'', abbreviated as ''Yu-tei'') — with which to supply isolated IJA island garrisons in the Pacific Ocean. On 5 March 1943, the 10th Army Staff Headquarters began work with the 7th Army Research Institute to design such a submarine, find suitable manufacturers and shipyard space for the construction of a fleet of them, and complete 20 of them by end of 1943, followed by an additional 400 submarines in later years. The IJA in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Army
The was the official ground-based armed force of the Empire of Japan from 1868 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of the Army, both of which were nominally subordinate to the Emperor of Japan as supreme commander of the army and the Imperial Japanese Navy. Later an Inspectorate General of Aviation became the third agency with oversight of the army. During wartime or national emergencies, the nominal command functions of the emperor would be centralized in an Imperial General Headquarters (IGHQ), an ad hoc body consisting of the chief and vice chief of the Army General Staff, the Minister of the Army, the chief and vice chief of the Naval General Staff, the Inspector General of Aviation, and the Inspector General of Military Training. History Origins (1868–1871) In the mid-19th century, Japan had no unified national army and the country was made up of feudal domains (''han'') with the Tokugawa shogunate (''bakufu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller Shaft
A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power and torque and rotation, usually used to connect other components of a drivetrain that cannot be connected directly because of distance or the need to allow for relative movement between them. As torque carriers, drive shafts are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, while avoiding too much additional weight as that would in turn increase their inertia. To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints, jaw couplings, or rag joints, and sometimes a splined joint or prismatic joint. History The term ''driveshaft'' first appeared during the mid-19th centu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Imperial Japanese Army")
