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700H Naval Air Squadron
700 Naval Air Squadron (700 NAS) is an experimental test squadron in the Royal Navy’s Fleet Air Arm. History 700 NAS was originally formed on 21 January 1940 at RNAS Hatston (HMS ''Sparrowhawk'') in Orkney in a plan to centralise the operations of the 700 series "Catapult" flights attached to catapult units and to act as a pool and Headquarters for all catapult aircraft embarked on battleships and cruisers - chiefly the Supermarine Walrus flying boat, together with the Fairey Seafox and Fairey Swordfish floatplanes. Initial equipment comprised 42 Walruses together with 11 Seafoxes and 12 Swordfishes. On 21 June 1940, a Supermarine Walrus, Walrus (''P5666'') of 700 Squadron on the cruiser found the German battleship German battleship Scharnhorst, ''Scharnhorst'' but ''Manchester'' did not engage. 25 September 1940, Walrus L2247, embarked on HMAS Australia, was shot down by French Vichy fighters at Dakar and crashed into the sea all 3 crew perished. Trailing German capital ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unmanned Aerial Vehicle
An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs are a component of an unmanned aircraft system (UAS), which includes adding a ground-based controller and a system of communications with the UAV. The flight of UAVs may operate under remote control by a human operator, as remotely-piloted aircraft (RPA), or with various degrees of autonomy, such as autopilot assistance, up to fully autonomous aircraft that have no provision for human intervention. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications.Hu, J.; Bhowmick, P.; Jang, I.; Arvin, F.; Lanzon, A.,A Decentralized Cluster Formation Containment Framework for Multirobot Systems IEEE Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruiser
A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several roles. The term "cruiser", which has been in use for several hundred years, has changed its meaning over time. During the Age of Sail, the term ''cruising'' referred to certain kinds of missions—independent scouting, commerce protection, or raiding—fulfilled by frigates or sloops-of-war, which functioned as the ''cruising warships'' of a fleet. In the middle of the 19th century, ''cruiser'' came to be a classification of the ships intended for cruising distant waters, for commerce raiding, and for scouting for the battle fleet. Cruisers came in a wide variety of sizes, from the medium-sized protected cruiser to large armored cruisers that were nearly as big (although not as powerful or as well-armored) as a pre-dreadnought battleship. With the advent of the dreadnought battleship before World W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyprus
Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is geographically in Western Asia, its cultural ties and geopolitics are overwhelmingly Southern European. Cyprus is the third-largest and third-most populous island in the Mediterranean. It is located north of Egypt, east of Greece, south of Turkey, and west of Lebanon and Syria. Its capital and largest city is Nicosia. The northeast portion of the island is ''de facto'' governed by the self-declared Turkish Republic of Northern Cyprus, which was established after the 1974 invasion and which is recognised as a country only by Turkey. The earliest known human activity on the island dates to around the 10th millennium BC. Archaeological remains include the well-preserved ruins from the Hellenistic period such as Salamis and Kourion, and Cypr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern-class AS Whaler
The Southern class was a class of whale-catcher ships requisitioned from a commercial whaling company for service during the Second World War. The whalers were converted for anti-submarine and minesweeping duties and were in use in the British Royal Navy and South African Navy The South African Navy (SA Navy) is the naval warfare branch of the South African National Defence Force. The Navy is primarily engaged in maintaining a conventional military deterrent, participating in counter-piracy operations, fishery prot .... Six ships were built in Germany for the Southern Whaling Company and after the war, one was retained in the South African Navy, one had been sunk by a mine and four were sold back to commercial whaling companies. History The six whale catchers were owned by Southern Whaling & Sealing Co. Ltd., London, United Kingdom and were used for whale catching in the Southern Ocean and Antarctic waters. The fleet of six ships was accompanied by the factory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Submarine Ondina
''Ondina'' was one of a dozen s, the second sub-class of the 600 Series of coastal submarines built for the (Royal Italian Navy) during the early 1930s. Design and description The ''Sirena'' class was an improved and enlarged version of the preceding s. They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of . Their crew numbered 45 officers and enlisted men.Chesneau, p. 309 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. On the surface, the ''Sirena'' class had a range of at ; submerged, they had a range of at .Bagnasco, p. 148 The boats were armed with six torpedo tubes, four in the bow and two in the stern for which they carried a total of 12 torpedoes. They were also armed with a single deck gun forward of the conning tower for combat on the surface. Th ... [...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] |
Denmark Strait
The Denmark Strait () or Greenland Strait ( , 'Greenland Sound') is an oceanic strait between Greenland to its northwest and Iceland to its southeast. The Norwegian island of Jan Mayen lies northeast of the strait. Geography The strait connects the Greenland Sea, an extension of the Arctic Ocean, to the Irminger Sea, a part of the Atlantic Ocean. It stretches long and wide at its narrowest, between Straumnes, the northwestern headland of the Westfjords peninsula of Hornstrandir, and Cape Tupinier on ''Blosseville Coast'' in East Greenland. The official International Hydrographic Organization (IHO) delineation between the Arctic and the North Atlantic Oceans runs from Straumnes to Cape Nansen, southwest of Cape Tunipier. From Straumnes to Cape Nansen the distance is . Hydrography The narrow depth, where the Greenland–Iceland Rise runs along the bottom of the sea, is . The cold East Greenland Current passes through the strait and carries icebergs south into the North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Cruiser Prinz Eugen
''Prinz Eugen'' () was an heavy cruiser, the third of a class of five vessels. She served with Nazi Germany's ''Kriegsmarine'' during World War II. The ship was laid down in April 1936, launched in August 1938, and entered service after the outbreak of war, in August 1940. She was named after Prince Eugene of Savoy, an 18th-century general in the service of Austria. She was armed with a main battery of eight guns and, although nominally under the limit set by the Anglo-German Naval Agreement, actually displaced over . ''Prinz Eugen'' saw action during Operation Rheinübung, an attempted breakout into the Atlantic Ocean with the battleship in May 1941. The two ships destroyed the British battlecruiser and moderately damaged the battleship in the Battle of the Denmark Strait. ''Prinz Eugen'' was detached from ''Bismarck'' during the operation to raid Allied merchant shipping, but this was cut short due to engine troubles. After putting into occupied France and undergoing r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of The Denmark Strait
The Battle of the Denmark Strait was a naval engagement in the Second World War, which took place on 24 May 1941 between ships of the Royal Navy and the ''Kriegsmarine''. The British battleship and the battlecruiser fought the German battleship and the heavy cruiser , which were attempting to break out into the North Atlantic to attack Allied merchant shipping (Operation Rheinübung). Less than 10 minutes after the British opened fire, a shell from ''Bismarck'' struck ''Hood'' near her aft ammunition magazines. Soon afterwards, ''Hood'' exploded and sank within three minutes, with the loss of all but three of her crew. ''Prince of Wales'' continued to exchange fire with ''Bismarck'' but suffered serious malfunctions in her main armament. The British battleship had only been completed in late March 1941, and used new quadruple gun turrets that were unreliable. ''Prince of Wales'' soon broke off the engagement. The battle was a tactical victory for the Germans, but its impact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Battleship Scharnhorst
''Scharnhorst'' was a German capital ship, alternatively described as a battleship or battlecruiser, of Nazi Germany's ''Kriegsmarine''. She was the lead ship of her class, which included her sister ship . The ship was built at the ''Kriegsmarinewerft'' dockyard in Wilhelmshaven; she was laid down on 15 June 1935 and launched a year and four months later on 3 October 1936. Completed in January 1939, the ship was armed with a main battery of nine 28 cm (11 in) C/34 guns in three triple turrets. Plans to replace these weapons with six 38 cm (15 in) SK C/34 guns in twin turrets were never carried out. ''Scharnhorst'' and ''Gneisenau'' operated together for much of the early portion of World War II, including sorties into the Atlantic to raid British merchant shipping. During her first operation, ''Scharnhorst'' sank the armed merchant in a short engagement (November 1939). ''Scharnhorst'' and ''Gneisenau'' participated in Operation Weserübung (April–Jun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floatplane
A floatplane is a type of seaplane with one or more slender floats mounted under the fuselage to provide buoyancy. By contrast, a flying boat uses its fuselage for buoyancy. Either type of seaplane may also have landing gear suitable for land, making the vehicle an amphibious aircraft. British usage is to call "floatplanes" "seaplanes" rather than use the term "seaplane" to refer to both floatplanes and flying boats. Use Since World War II and the advent of helicopters, advanced aircraft carriers and land-based aircraft, military seaplanes have stopped being used. This, coupled with the increased availability of civilian airstrips, have greatly reduced the number of flying boats being built. However, numerous modern civilian aircraft have floatplane variants, most of these are offered as third-party modifications under a supplemental type certificate (STC), although there are several aircraft manufacturers that build floatplanes from scratch. These floatplanes have found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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