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Shigeyoshi Miwa
, was an admiral in the Imperial Japanese Navy during World War II. He commanded the Japanese submarine forces during the attack on Pearl Harbor. Biography Miwa was a native of Aichi prefecture, and graduated 59th out of 148 cadets in the 39th class of the Imperial Japanese Navy Academy in 1911. He served his midshipman duty on the training ship ''Aso'' and battleship ''Mikasa'', and as a sub-lieutenant on the protected cruiser ''Chikuma'', coastal defense ship ''Iwami'' and armored cruiser ''Azuma''. In 1917, he attended the Navy Staff College, where he specialized in navigation, torpedo warfare and submarines, transferring to the submarine warfare section as a lieutenant in 1918. He stayed on to become an instructor at the Submarine Warfare School from 1920 to 1922, and served as acting commanding officer of ''Submarine No, 22'' (the future ) from May to December 1922. He was promoted to lieutenant commander in 1923. In 1924, Miwa was given his first true command, that of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aichi Prefecture
is a prefecture of Japan located in the Chūbu region of Honshū. Aichi Prefecture has a population of 7,552,873 () and a geographic area of with a population density of . Aichi Prefecture borders Mie Prefecture to the west, Gifu Prefecture and Nagano Prefecture to the north, and Shizuoka Prefecture to the east. Overview Nagoya is the capital and largest city of Aichi Prefecture, and the fourth-largest city in Japan, with other major cities including Toyota, Okazaki, and Ichinomiya. Aichi Prefecture and Nagoya form the core of the Chūkyō metropolitan area, the third-largest metropolitan area in Japan and one of the largest metropolitan areas in the world. Aichi Prefecture is located on Japan's Pacific Ocean coast and forms part of the Tōkai region, a subregion of the Chūbu region and Kansai region. Aichi Prefecture is home to the Toyota Motor Corporation. Aichi Prefecture had many locations with the Higashiyama Zoo and Botanical Gardens, The Chubu Centrair Internat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battleship
A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries. The term ''battleship'' came into use in the late 1880s to describe a type of ironclad warship,Stoll, J. ''Steaming in the Dark?'', Journal of Conflict Resolution Vol. 36 No. 2, June 1992. now referred to by historians as pre-dreadnought battleships. In 1906, the commissioning of into the United Kingdom's Royal Navy heralded a revolution in the field of battleship design. Subsequent battleship designs, influenced by HMS ''Dreadnought'', were referred to as "dreadnoughts", though the term eventually became obsolete as dreadnoughts became the only type of battleship in common use. Battleships were a symbol of naval dominance and national might, and for decades the battleship was a major factor in both diplomacy and military strategy.Sondhaus, L. ''Naval Warfare 1815–1914'', . A global arms race in battleship cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Warfare
Submarine warfare is one of the four divisions of underwater warfare, the others being anti-submarine warfare, mine warfare and mine countermeasures. Submarine warfare consists primarily of diesel and nuclear submarines using torpedoes, missiles or nuclear weapons, as well as advanced sensing equipment, to attack other submarines, ships, or land targets. Submarines may also be used for reconnaissance and landing of special forces as well as deterrence. In some navies they may be used for task force screening. The effectiveness of submarine warfare partly depends on the anti-submarine warfare carried out in response. American Civil War The age of submarine warfare began during the American Civil War. The 1860s was a time of many turning points in terms of how naval warfare was fought. Many new types of warships were being developed for use in the United States and Confederate States Navies. Submarine watercraft were among the newly created vessels. The first sinking of an enemy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
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 Autonomous underwater vehicle, 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 navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...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] |
Navigation
Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, marine navigation, aeronautic navigation, and space navigation. It is also the term of art used for the specialized knowledge used by navigators to perform navigation tasks. All navigational techniques involve locating the navigator's position compared to known locations or patterns. Navigation, in a broader sense, can refer to any skill or study that involves the determination of position and direction. In this sense, navigation includes orienteering and pedestrian navigation. History In the European medieval period, navigation was considered part of the set of '' seven mechanical arts'', none of which were used for long voyages across open ocean. Polynesian navigation is probably the earliest form of open-ocean navigation; it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval War College (Japan)
:''This article deals with the Empire of Japan's Naval War College. For other war colleges, see: War college.'' The , Short form: 海大 Kaidai) was the staff college of the Imperial Japanese Navy, responsible for training officers for command positions either on warships, or in staff roles. In the 1880s, the Imperial Japanese Navy realized the need for post-graduate study by officer graduates of the Imperial Japanese Naval Academy. Naval Minister Saigō Tsugumichi authorized the formation of the Naval War College on 14 July 1888 in Tsukiji, Tokyo, and the College accepted its first class from 28 August 1888. The same year the Imperial Japanese Naval Academy moved from Tsukiji to Etajima in Hiroshima Prefecture. The Navy turned to the United Kingdom for assistance in modernizing and Westernizing, and the Royal Navy provided military advisors to assist in the development of the curriculum. The first director of the Naval War College was Inoue Kaoru and one of the foremost of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Cruiser Azuma
(sometimes transliterated (archaically) as ''Adzuma'') was an armored cruiser (''Sōkō jun'yōkan'') built for the Imperial Japanese Navy (IJN) in the late 1890s. As Japan lacked the industrial capacity to build such warships herself, the ship was built in France. She participated in most of the naval battles of the Russo-Japanese War of 1904–05 and was lightly damaged during the Battle off Ulsan and the Battle of Tsushima. ''Azuma'' began the first of five training cruises in 1912 and saw no combat during World War I. She was never formally reclassified as a training ship although she exclusively served in that role from 1921 until she was disarmed and hulked in 1941. ''Azuma'' was badly damaged in an American carrier raid in 1945, and subsequently scrapped in 1946. Background and design The 1896 Naval Expansion Plan was made after the First Sino-Japanese War, and included four armored cruisers in addition to four more battleships, all of which had to be ordered from ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armored Cruiser
The armored cruiser was a type of warship of the late 19th and early 20th centuries. It was designed like other types of cruisers to operate as a long-range, independent warship, capable of defeating any ship apart from a battleship and fast enough to outrun any battleship it encountered. For many decades, naval technology had not advanced far enough for designers to produce a cruiser which combined an armored belt with the long range and high speed required to fulfill its mission. For this reason, beginning in the 1880s and 1890s, many navies preferred to build protected cruisers, which only relied on a light armored deck to protect the vital parts of the ship. However, by the late 1880s, the development of modern rapid-fire breech-loading cannon and high-explosive shells made the reintroduction of side armor a necessity. The invention of face-hardened armor in the mid-1890s offered effective protection with less weight than previously. Varying in size, the armored cruiser was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Battleship Iwami
''Oryol'' (russian: Орёл, "Eagle"; also Orel, Orël) was a built for the Imperial Russian Navy in the first decade of the 20th century. The ship was completed after the start of the Russo-Japanese War in February 1904 and was assigned to the Second Pacific Squadron sent to the Far East six months later to break the Japanese blockade of Port Arthur. The Japanese captured the port while the squadron was in transit and their destination was changed to Vladivostok. ''Oryol'' was badly damaged during the Battle of Tsushima in May 1905 and surrendered to the Japanese, who put her into service under the name of ''Iwami'' ( ja, 石見). Reconstructed by the Japanese in 1905–1907, ''Iwami'' was reclassified by the Imperial Japanese Navy as a coastal defense ship in 1912. She participated in the Battle of Tsingtao at the beginning of World War I and supported the Japanese troops that landed in Siberia in 1918 during the Russian Civil War. ''Iwami'' was used as a training ship beg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coastal Defense Ship
Coastal defence ships (sometimes called coastal battleships or coast defence ships) were warships built for the purpose of Littoral (military), coastal defence, mostly during the period from 1860 to 1920. They were small, often cruiser-sized warships that sacrificed speed and range for armour and armament. They were usually attractive to nations that either could not afford full-sized battleships or could be satisfied by specially designed shallow-draft vessels capable of littoral operations close to their own shores. The Nordic countries and Thailand found them particularly appropriate for their island-dotted coastal waters. Some vessels had limited Blue-water navy, blue-water capabilities; others operated in Maritime geography#Riverine, rivers. The coastal defence ships differed from earlier Monitor (warship), monitors by having a higher Freeboard (nautical), freeboard and usually possessing both higher speed and a secondary armament; some examples also mounted casemated gun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Cruiser Chikuma (1911)
was the lead ship in the of protected cruisers of the Imperial Japanese Navy. ''Chikuma'' had two sister ships, and the . ''Chikuma'' was named for the Chikuma River in Nagano prefecture. Background The ''Chikuma''-class protected cruisers were built as part of the 1907 Naval Expansion Program, based on lessons learned during the Russo-Japanese War. ''Chikuma'' was laid down at Sasebo Naval Arsenal in Nagasaki Prefecture, Japan on 1 April 1909, launched on 1 April 1911 and entered service on 17 May 1912.Nishida, '' Ships of the Imperial Japanese Navy'' Design The basic design of the ''Chikuma''-class cruisers was modeled after the Royal Navy with some modifications and was also largely influenced by the design of the cruiser Jentsura, ''Warships of the Imperial Japanese Navy''; page 104-105 The silhouette of the ''Chikuma'' class was readily distinguishable due to its four tall smokestacks. ''Chikuma'' had a hull with an overall length of and width of , with a normal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
