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Kampon
The was the externally operating division of the Ministry of the Navy of Japan responsible for the administration of naval vessel construction. From 1923 onward, it took on the role of a research institution for the research and development of naval technologies and engineering. This included studying and investigating existing western naval technology, developing and overseeing Japan's domestic shipbuilding and arms industries, and training officers to become naval engineers and inspectors. The bureau was dismantled along with the naval ministry in November 1945 after Japan surrendered to the Allies at the end of World War II. Taishō period weapons The Department developed various weapons during the Taishō period. These were known a "Xth Year Type" weapons, with the year being the year of the Taishō Emperor's reign (dating from 30 July 1912 - 25 December 1926). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type C Submarine
The was one of the first classes of submarine in the Imperial Japanese Navy (IJN) to serve during the Second World War. ''Type-C'' submarines were better armed than the ''Type-A'' and ''Type-B''. The ''Type-C''s were also utilized as '' Kō-hyōteki'' or ''Kaiten were crewed torpedoes and suicide craft, used by the Imperial Japanese Navy in the final stages of World War II. History In recognition of the unfavorable progress of the war, towards the end of 1943 the Japanese high command considered s ...'' mother ships, for this reason they were not equipped with aviation facilities. Class variants The ''Type-C'' submarines were divided into three classes: * * * . However, the ''Vessel number 379''-class was never built. ''Type-C'' (''I-16'' class) Project number S38 and S38B (Latter batch). They were based on the ''I-7'' class. Eight boats were built between 1937 and 1944 under the Maru 3 Programme (Boats 44 - 48) and the Maru Kyū Programme (Boats 376 - 378) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type B Submarine
The was a class of submarine in the Imperial Japanese Navy (IJN) which served during World War II. The ''Type-B'' submarines were similar to the ''Type-A'' apart from not having the headquarters installation. Class variants The ''Type-B'' submarines were divided into four classes: * * * * . The ''5115th vessel''-class submarines were not built and remained a design only. ''Type-B'' (''I-15'' class) Project number S37. Twenty boats were built between 1937 and 1944 under the Maru 3 Programme (Boats 37 - 42) and Maru 4 Programme (Boats 139 - 152). ''Type-B Mod.1'' (''I-40'' class) Project number S37B. Six boats were planned under the Maru Kyū Programme (Boats 370 - 375), all boats were completed. On the outside this class looked the same as the ''I-15'' class; however, they were built from high-tensile strength steel and equipped with diesel engines of a simpler design. ''Type-B Mod.2'' (''I-54'' class) Project number S37C. Twenty-one boats were planned under th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutsuki Class Destroyer
The were a class of twelve destroyers of the Imperial Japanese Navy. All were given traditional poetic names of the months of the year by the Lunar calendar or phases of the moon. Some authors consider the and ''Mutsuki''-class destroyers to be extensions of the earlier . Background With the imposition of the Washington Naval Treaty limiting the number and size of capital warships, increased emphasis was placed by the Imperial Japanese Navy on the quantity and firepower of its destroyer fleet to counter what was perceived to be the growing threat from the United States Navy. The ''Mutsuki''-class destroyers were an improved version of the ''Kamikaze'' class destroyers and were ordered under the 1923 fiscal budget. Along with the ''Minekaze'' and ''Kamikaze'' classes, the ''Mutsuki''-class ships formed the backbone of Japanese destroyer formations throughout the twenties and thirties. The ''Minekaze'' and ''Kamikaze'' classes were withdrawn from front line service and reassign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaidai Class Submarine
The was a type of first-class submarine operated by the Imperial Japanese Navy (IJN) before and during World War II. The type name was shortened to Navy Large Type Submarine. All ''Kaidai''-class submarines originally had a two-digit boat name, from ''I-51'' onwards. On 20 May 1942, all Kaidai submarines added a '1' to their names. For example, ''I-52'' became ''I-152''. Ships are listed by the three-digit boat name if they had one, two-digit if they were not granted one or left service before 20 May 1942. Class variants The ''Kaidai''-type submarines were divided into seven classes and two subclasses: * * * * * * * * * Kaidai I (''I-51'' class) Project number S22. The prototype for the class. The sole Kaidai I, ''I-51'', was based on World War I-era German submarines. She was completed in 1924, refitted with new engines in 1932 and scrapped in 1941. ''I-51'' never saw combat. *Boat in class Kaidai II (''I-152'' class) Project number S25. There was only 1 Kaidai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Momi Class Destroyer
The ''Momi''-class destroyers were a class of twenty-one second-class destroyers of the Imperial Japanese Navy. All were named for plants. Obsolete by the beginning of the Pacific War, the ''Momi''s were relegated to mostly secondary roles, with some vessels serving throughout the war as patrol vessels or high speed transports. Background Construction of the medium-sized ''Momi''-class destroyers was authorized as part of the Imperial Japanese Navy's 8-4 Fleet Program from fiscal 1918–1920, as an accompaniment to the larger with which they shared many common design characteristics. These vessels were produced at several shipyards around Japan, and when formed into attack squadrons of two to four vessels, made up the backbone of the inter-war Imperial Japanese Navy.Globalsecurity.org, ''IJN Momi class destroyers'' The final seven vessels planned for this series were cancelled, and re-ordered as the new s in 1919, and by the mid-1920s the concept of the "second-class destroyer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaichū Type Submarine
The submarines were double-hulled medium-sized submarines of the Imperial Japanese Navy during World War II. They were derived from the . Several variants existed. From 1934 to 1944, the K6 type (''Ro-33'' Class) and the K7 type (Senchū, ''Ro-35'' Class) were built. They were equipped with a L/40 gun and four 53 cm torpedo tubes for ten type 95 Long Lance torpedoes. Most of these submarines were destroyed in combat, suffering from Allied anti-submarine warfare measures, and only survived the war. Class variants The ''Kaichū'' type submarines were divided into seven classes: * * * * * * * ''Kaichū I (Ro-11 class)'' Project number S7. In 1910s, the Imperial Japanese Navy (IJN) bought a license of Schneider-Laubeuf design submarine. The IJN used the design as model and built the ''S Type (Schneider Type)'' submarine, the and . The ''Kaichū I'' is the submarine which jumboized the ''S Type'' submarines. *Boats in class ''Kaichū II (Ro-13 class)'' Project ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Type L Submarine
The submarines were medium-sized submarines of the Imperial Japanese Navy (IJN), serving during the 1920s and World War II. The ''Type L'' submarines were built with Vickers naval technical guidance. All boats were built in the Mitsubishi Heavy Industries-Kobe Shipyard by the contract with Vickers. Class variants The ''Type L'' submarines were divided into four classes: * * * * ''Type L1 (Ro-51-class)'' In 1916, the Mitsubishi Shipbuilding Corporation got the Vickers ''L'' class submarine informations. Mitsubishi which lost competition to the Kawasaki's ''Type F'' submarines ( Fiat- Laurenti design, ''Ro-1'' class and ''Ro-3'' class), bought the license for the ''L'' class submarine from Vickers. The IJN hoped an improvement of submarine technologies will be achieved and ordered this submarine from Mitsubishi. Mitsubishi bought six submarine kits, and built two boats by semi-knock down. The submarine crews were satisfied with the Vickers diesels because they proved to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of The Navy Of Japan
The was a Cabinet (government), cabinet-level ministry in the Empire of Japan charged with the administrative affairs of the Imperial Japanese Navy (IJN). It existed from 1872 to 1945. History The Navy Ministry was created in April 1872, along with the Ministry of the Army, Army Ministry, to replace the of the early Government of Meiji Japan, Meiji government. Initially, the Navy Ministry was in charge of both administration and operational command of the Imperial Japanese Navy. However, with the creation of the Imperial Japanese Navy General Staff in May 1893, it was left with only administrative functions. "The ministry was responsible for the naval budget, ship construction, weapons procurement, personnel, relations with the Diet and the cabinet and broad matters of naval policy. The General Staff directed the operations of the fleet and the preparation of war plans".Spector The post of Navy Minister was politically powerful. Although a member of the Cabinet after the esta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Defence (Australia)
Defence Australia is a department of the Government of Australia charged with the responsibility to defend Australia and its national interests. Along with the Australian Defence Force (ADF), it forms part of the Australian Defence Organisation (ADO) and is accountable to the Commonwealth Parliament, on behalf of the Australian people, for the efficiency and effectiveness with which it carries out the Government's defence policy. The head of the department, who leads it on a daily basis, is the Secretary of the Department of Defence (SECDEF), currently Greg Moriarty. The Secretary reports to the Minister of Defence, Richard Marles. History Australia has had at least one defence-related government department since Federation in 1901. The first Department of Defence existed from 1901 until 1921. In 1915, during World War I, a separate Department of the Navy was created. The two departments merged in 1921 to form the second Department of Defence, regarded as a separate bod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender in World War II. The Japan Maritime Self-Defense Force (JMSDF) was formed between 1952–1954 after the dissolution of the IJN. The Imperial Japanese Navy was the third largest navy in the world by 1920, behind the Royal Navy and the United States Navy (USN). It was supported by the Imperial Japanese Navy Air Service for aircraft and airstrike operation from the fleet. It was the primary opponent of the Western Allies in the Pacific War. The origins of the Imperial Japanese Navy go back to early interactions with nations on the Asian continent, beginning in the early medieval period and reaching a peak of activity during the 16th and 17th centuries at a time of cultural exchange with European powers during the Age of Discovery. After t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
14 Cm/40 11th Year Type Naval Gun
The 14 cm/40 11th Year Type naval gun was the standard surface battery for Japanese submarine cruisers of World War II. Most carried single guns, but Junsen type submarines carried two. Japanese submarines ''I-7'' and ''I-8'' carried an unusual twin mounting capable of elevating to 40°. The appended designation ''11th year type'' refers to the horizontal sliding breech block on these guns. Breech block design began in 1922, or the eleventh year of the Taishō period in the Japanese calendar. The gun fired a projectile in diameter, and the barrel was 40 calibers long (barrel length is 14 cm x 40 = 560 centimeters or 220 inches). World War II This gun was the weapon used by ''I-17'' to sink ''SS Emidio'' and to later shell the Ellwood Oil Field near Santa Barbara, California. It was also used by ''I-25'' for the Bombardment of Fort Stevens in Oregon near the mouth of the Columbia River and by ''I-26'' to shell the Estevan Point lighthouse in British Columbia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rifled Breech Loader
A rifled breech loader (RBL) is an artillery piece which, unlike the smoothbore cannon and rifled muzzle loader (RML) which preceded it, has rifling in the barrel and is loaded from the breech at the rear of the gun. The spin imparted by the gun's rifling gives projectiles directional stability and increased range. Loading from the rear of the gun leaves the crew less exposed to enemy fire, allows smaller gun emplacements or turrets, and allows a faster rate of fire. Overview The major problem to be solved with breechloading artillery was obturation: the sealing of the breech after firing to ensure that none of the gases generated by the burning of the propellant (initially gunpowder) escaped rearwards through the breech. This was both a safety issue and one of gun performance – all the propellant gas was needed to accelerate the projectile along the barrel. The second problem was speed of operation – how to close the breech before firing and open it after firing as quickly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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