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Japanese Destroyer Arashi
''Arashi'' was a of the Imperial Japanese Navy. ''Arashi'' played a vital role in World War II by inadvertently guiding US attack planes to the Japanese carrier fleet at the Battle of Midway. ''Arashi'' had become separated from the Japanese carrier force while attempting to destroy an American submarine, . Following her attacks on ''Nautilus'', ''Arashi'' steamed at high speed to rejoin the group. All four IJN carriers were sunk by Douglas SBD Dauntless dive bombers of American aircraft carriers and , giving the US a decisive victory and checking Japanese momentum in the Pacific War. Design and description The ''Kagerō'' class was an enlarged and improved version of the preceding . Their crew numbered 240 officers and enlisted men. The ships measured overall, with a beam of and a draft of . They displaced at standard load and at deep load.Whitley, pp. 200–01 The ships had two Kampon geared steam turbines, each driving one propeller shaft, using steam provided by thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empire Of Japan
The also known as the Japanese Empire or Imperial Japan, was a historical nation-state and great power that existed from the Meiji Restoration in 1868 until the enactment of the post-World War II 1947 constitution and subsequent formation of modern Japan. It encompassed the Japanese archipelago and several colonies, protectorates, mandates, and other territories. Under the slogans of and following the Boshin War and restoration of power to the Emperor from the Shogun, Japan underwent a period of industrialization and militarization, the Meiji Restoration, which is often regarded as the fastest modernisation of any country to date. All of these aspects contributed to Japan's emergence as a great power and the establishment of a colonial empire following the First Sino-Japanese War, the Boxer Rebellion, the Russo-Japanese War, and World War I. Economic and political turmoil in the 1920s, including the Great Depression, led to the rise of militarism, nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Turbine
A steam turbine is a machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel alloys into precision parts using technologies that first became available in the 20th century; continued advances in durability and efficiency of steam turbines remains central to the energy economics of the 21st century. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results in a closer approach to the ideal reversible expansion process. Because the turbine generates rotary motion, it can be coupled to a generator to harness its motion into electricity. Such turbogenerators are the core of thermal power stations which can be fueled by fossil-fuels, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motor Torpedo Boat PT-109
''PT-109'' was an 80' Electric Launch Company, Elco PT boat (patrol torpedo boat) last commanded by Lieutenant (junior grade) John F. Kennedy, future United States president, in the Solomon Islands campaign of the Pacific Ocean theater of World War II, Pacific theater during World War II. Kennedy's actions in saving his surviving crew after ''PT-109'' was rammed and sunk by a Japanese destroyer made him a war hero. Back problems stemming from the incident required months of hospitalization at Chelsea Naval Hospital and plagued him the rest of his life. Kennedy's postwar campaigns for elected office referred often to his service on ''PT-109''. Specifications Hubert Scott-Paine of the British Power Boat Company had developed Air Sea Rescue fast motor boats in the UK. He took his PT boat to Elco in 1939 as there was a shortage of suitable engines in the UK at the outbreak of war. British Powerboat Company continued production of his designs in Britain throughout the hostilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackett Strait
Blackett Strait is a waterway in the Western Province of the Solomon Islands. It lies between the islands of Kolombangara to the north, and Arundel Island (Kohinggo) to the south. It connects Vella Gulf to the west with Kula Gulf to the east. Battle of Blackett Strait During the Solomon Islands campaign in World War II, the Battle of Blackett Strait was fought here between the Imperial Japanese Navy and the United States Navy on the night of 5–6 March 1943.Nevitt, ''Combinedfleet.com''''Murasame'' PT-109 Another engagement occurred in Blackett Strait when a force of PT boats were sent to intercept the "Tokyo Express" supply convoy on 2 August. In what National Geographic called a "poorly planned and badly coordinated" attack, 15 boats with 60 available torpedoes went into action. However, of the 30 torpedoes fired, not a single hit was scored. In that battle, only four PT boats (the section leaders) had radar, and they were ordered to return to base after firing their torped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chūichi Nagumo
Chūichi Nagumo (, ''Nagumo Chūichi''; 25 March 1887 – 6 July 1944) was an admiral in the Imperial Japanese Navy (IJN) during World War II. Nagumo led Japan's main carrier battle group, the ''Kido Butai'', in the attack on Pearl Harbor, the Indian Ocean raid and the Battle of Midway. He committed suicide during the Battle of Saipan. Early life Nagumo was born in the city of Yonezawa, Yamagata Prefecture in northern Japan in 1887. He graduated from the 36th class of the IJN Academy in 1908, with a ranking of 8 out of a class of 191 cadets. As a midshipman, he served in the protected cruisers and and the armored cruiser . After his promotion to ensign in 1910, he was assigned to cruiser . After attending torpedo and naval artillery schools, he was promoted to sub-lieutenant and served in the battleship , followed by the destroyer . In 1914, he was promoted to lieutenant and was assigned to the battlecruiser , followed by the destroyer . He was assigned his first command, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dive Bomber
A dive bomber is a bomber aircraft that dives directly at its targets in order to provide greater accuracy for the bomb it drops. Diving towards the target simplifies the bomb's trajectory and allows the pilot to keep visual contact throughout the bomb run. This allows attacks on point targets and ships, which were difficult to attack with conventional level bombers, even ''en masse''. After World War II, the rise of precision-guided munitions and improved anti-aircraft defences—both fixed gunnery positions and fighter interception—led to a fundamental change in dive bombing. New weapons, such as rockets, allowed for better accuracy from smaller dive angles and from greater distances. They could be fitted to almost any aircraft, including fighters, improving their effectiveness without the inherent vulnerabilities of dive bombers, which needed air superiority to operate effectively. Method A dive bomber dives at a steep angle, normally between 45 and 60 degrees or ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periscope Depth
A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fiber optics instead of mirrors and providing magnification operate on submarines and in various fields of science. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction. Early examples Johannes Hevelius described an early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi A6M Zero
The Mitsubishi A6M "Zero" is a long-range carrier-based aircraft, carrier-based fighter aircraft formerly manufactured by Mitsubishi Aircraft Company, a part of Mitsubishi Heavy Industries, and was operated by the Imperial Japanese Navy from 1940 to 1945. The A6M was designated as the , or the Mitsubishi A6M Rei-sen. The A6M was usually referred to by its pilots as the ''Reisen'' (, zero fighter), "0" being the last digit of the Japanese calendar#Years, imperial year 2600 (1940) when it entered service with the Imperial Navy. The official World War II Allied names for Japanese aircraft, Allied reporting name was "Zeke", although the name "Zero" (from Type 0) was used colloquially as well. The Zero is considered to have been the most capable carrier-based aircraft, carrier-based fighter in the world when it was introduced early in World War II, combining excellent maneuverability and very long range.Hawks, Chuck"The Best Fighter Planes of World War II" chuckhawks.com. Retrieved: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type 93 Torpedo
The was a -diameter torpedo of the Imperial Japanese Navy (IJN), launched from surface ships. It is commonly referred to as the Long Lance by most modern English-language naval historians, a nickname given to it after the war by Samuel Eliot Morison, the chief historian of the U.S. Navy, who spent much of the war in the Pacific Theater. In Japanese references, the term is also used, in reference to its propulsion system. It was the most advanced naval torpedo in the world at the time. History and development The Type 93's development (in parallel with a submarine-launched model, the Type 95) began in Japan in 1928, under the auspices of Rear Admiral Kaneji Kishimoto and Captain Toshihide Asakuma. The torpedo design was inspired by the British oxygen-enriched torpedoes used on the s. At the time, the most powerful potential enemy of the Japanese Navy was the United States Navy's Pacific Fleet. The U.S. Navy's doctrine, presuming an invasion by Japan of the Philippines (an Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superstructure
A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. Aboard ships and large boats On water craft, the superstructure consists of the parts of the ship or a boat, including sailboats, fishing boats, passenger ships, and submarines, that project above her main deck. This does not usually include its masts or any armament turrets. Note that in modern times, turrets do not always carry naval artillery, but they can also carry missile launchers and/or antisubmarine warfare weapons. The size of a watercraft's superstructure can have many implications in the performance of ships and boats, since these structures can alter their structural rigidity, their displacements, and/or stability. These can be detrimental to any vessel's performance if they are taken into consideration incorrectly. The height and the weight of superstructure on board a ship or a bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superfiring
Superfiring armament is a naval military building technique in which two (or more) turrets are located in a line, one behind the other, with the second turret located above ("super") the one in front so that the second turret can fire over the first. This configuration meant that both forward or aft turrets could fire at any target within their sector, even when the target was in the same vertical plane as the turrets. History The history of large surface warships follow generic labels as battleships, and a further distinction between pre-dreadnoughts and dreadnoughts. The era of technical evolution occurred roughly from 1900 to 1945. Part of the technical evolution was driven by the need to compress as much large-gun firepower into the smallest space possible. In early designs, the large-caliber turrets were all located on the same plane firing to one side or the other. In firing ahead or to the rear, usually only the forward-most or rearmost turret could fire, especially a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
