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Anti-torpedo Bulge
The anti-torpedo bulge (also known as an anti-torpedo blister) is a form of defence against naval torpedoes occasionally employed in warship construction in the period between the First and Second World Wars. It involved fitting (or retrofitting) partially water-filled compartmentalized sponsons on either side of a ship's hull, intended to detonate torpedoes, absorb their explosions, and contain flooding to damaged areas within the bulges. Application Essentially, the bulge is a compartmentalized, below the waterline sponson isolated from the ship's internal volume. It is part air-filled, and part free-flooding. In theory, a torpedo strike will rupture and flood the bulge's outer air-filled component while the inner water-filled part dissipates the shock and absorbs explosive fragments, leaving the ship's main hull structurally intact. Transverse bulkheads within the bulge limit flooding to the damaged area of the structure. The bulge was developed by the British Director of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Glatton In Drydock IWM SP 2083
HMS or hms may refer to: Education * Habib Medical School, of the Islamic University in Uganda * Hartley–Melvin–Sanborn Community School District of Iowa, United States * Harvard Medical School of Harvard University * Heidelberg Middle School, a former American school in Heidelberg, Germany * Hongwanji Mission School, in Hawaii, United States * Horley Methodist School, Teluk Intan, in Malaysia Medicine and science * Hartford Medical Society, an American professional association based in Hartford, Connecticut * Health management system * Hexose monophosphate shunt, an alternative name for the pentose phosphate pathway * Highly migratory species, a classification of fish * Hypermobility spectrum disorder, formerly hypermobility syndrome or HMS * HMS, a brand name of medrysone Technology *Huawei Mobile Services, proprietary apps and services from Huawei bundled with Android devices * HMS Networks, a company in the field of industrial communications * Heavy melting s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early Middle Ages, medieval period, the first major maritime engagements were fought in the Hundred Years' War against Kingdom of France, France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the British Armed Forces, UK's armed services, it is consequently known as the Senior Service. From the early 18th century until the World War II, Second World War, it was the world's most powerful navy. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Bulkhead
A torpedo bulkhead is a type of naval armor common on the more heavily armored warships, especially battleships and battlecruisers of the early 20th century. It is designed to keep the ship afloat even if the hull is struck underneath the belt armor by a shell or by a torpedo. History As early torpedoes had demonstrated their effectiveness at seriously damaging ships below the waterline by the 1880s, naval designers began developing methods to better protect ships against the new weapons. The earliest protection scheme was devised by Sir Edward Reed in 1884; he proposed a double bottom that included an armored inner hull lining that connected to the bottom edges of the belt armor. It was not adopted, as it imposed serious limitations on internal space and reduced the thickness of the belt. Subsequent, early attempts relied primarily on the coal bunkers, on the assumption that the ship's coal would absorb the blast effects, which would be contained by the interior longitudin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Belt
The torpedo belt was part of the armoring scheme in some warships between the 1920s and 1940s. It consisted of a series of lightly armored compartments, extending laterally along a narrow belt that intersected the ship's waterline. In theory this belt would absorb the explosions from torpedoes, or any naval artillery shells that struck below the waterline, and thus minimize internal damage to the ship itself. Torpedo belts are also known as Side Protection Systems or SPS, or Torpedo Defense System or TDS. Background: insufficiency of belt armor Armored warships (pre-dreadnought battleships, armored cruisers, dreadnought battleships, battlecruisers, and later light and heavy cruisers) of the early 20th century carried their main protective armor above the waterline – the " main belt" – which was intended to stop flat-trajectory gunfire from piercing the hull. Below the belt, the armor generally tapered away, to reduce overall weight. This, however, makes a ship v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Proximity Fuze
A magnetic proximity fuse was patented by P.J. Eliomarkakis, (United States Patent US2434551 of January 13, 1948) although similar devices had been in service for nearly a decade. It is a type of proximity fuze that initiates a detonator in a piece of ordnance such as a land mine, naval mine, depth charge, or shell when the fuse's magnetic equilibrium is upset by a magnetic object such as a tank or a submarine. Magnetic field sensors and movement sensors inside the ordnance detect changes to the terrestrial magnetic field of the ordnance caused by another ferromagnetic object. A signal processor inside the ordnance receives the signals from the magnetic field sensors and movement sensors and activates the detonator which will then detonate the explosives within the ordnance. Examples Examples of pieces of ordnance that employ a magnetic fuze include: * the Chinese Chen-2 bottom mine * the Egyptian T-93 mine See also * Proximity sensor * Reed switch * Precision bombing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Pistol
Magnetic pistol is the term for the device on a torpedo or naval mine that detects its target by its magnetic field, and triggers the fuse for detonation. A device to detonate a torpedo or mine on ''contact'' with a ship or submarine is known as a contact pistol. A magnetic pistol on a mine will allow the mine to detonate in proximity to a target, rather than actual contact, allowing the mine to cover a larger effective area. A magnetic pistol on a torpedo allows the torpedo to detonate underneath the ship, instead of upon impact with the side of the ship. As an explosion underneath a ship is contained between water and the ship, far more damage will result to the ship. The explosion will lift the ship out of the water and may break the keel of the ship, splitting it in two. Any hole created by the explosion will be on the bottom, causing more flooding. A contact pistol on a torpedo will require the torpedo to strike the side of the ship. Any hole created by the explosion will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Length-to-beam Ratio
In naval architecture and aerospace engineering, the fineness ratio is the ratio of the length of a body to its maximum width. Shapes that are short and wide have a low fineness ratio, those that are long and narrow have high fineness ratios. Aircraft that spend time at supersonic speeds, e.g. the Concorde, generally have high fineness ratios. At speeds below critical mach, one of the primary forms of drag is skin friction. As the name implies, this is drag caused by the interaction of the airflow with the aircraft's skin. To minimize this drag, the aircraft should be designed to minimize the exposed skin area, or "wetted surface". One solution to this problem is constructing an "egg shaped" fuselage, for example as used on the home-built Questair Venture. Theoretical ideal fineness ratios in subsonic aircraft fuselages are typically found at about 6:1, however this may be compromised by other design considerations such as seating or freight size requirements. Because a higher f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Battleship Yamashiro
was the second of two dreadnought battleships built for the Imperial Japanese Navy. Launched in 1915 and commissioned in 1917, she initially patrolled off the coast of China, playing no part in World War I. In 1923, she assisted survivors of the Great Kantō earthquake. ''Yamashiro'' was modernized between 1930 and 1935, with improvements to her armor and machinery and a rebuilt superstructure in the pagoda mast style. Nevertheless, with only 14-inch guns, she was outclassed by other Japanese battleships at the beginning of World War II, and played auxiliary roles for most of the war. By 1944, though, she was forced into front-line duty, serving as the flagship of Vice-Admiral Shōji Nishimura's Southern Force at the Battle of Surigao Strait, the southernmost action of the Battle of Leyte Gulf. During fierce night fighting in the early hours of 25 October against a superior American and Australian force, ''Yamashiro'' was sunk by torpedoes and naval gunfire. Nishimura went ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dover Harbour
The Port of Dover is a cross-channel ferry, cruise terminal, maritime cargo and marina facility situated in Dover, Kent, south-east England. It is the nearest English port to France, at just away, and is one of the world's busiest maritime passenger ports, with 11.7 million passengers, 2.6 million lorries, 2.2 million cars and motorcycles and 80,000 coaches passing through it in 2017, and with an annual turnover of £58.5 million a year. This compares with the nearby Channel Tunnel, the only fixed link between the island of Great Britain and the European mainland, which now handles an estimated 20 million passengers and 1.6 million trucks per year. The modern port facility features a large artificial harbour constructed behind stone piers and a defensive concrete breakwater. The port is divided into two main sections: the Eastern Docks serve as the main cross-channel ferry terminal, while the Western Docks contain a cruise ship terminal and a yacht marina along with cargo facil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FL-boat
The FL-boat (''Fernlenkboot'', literally "remote controlled boat") was a weapon used by the Imperial German Navy during World War I. It was a remote-controlled motorboat, 17 m long, carrying of explosives, which was intended to be steered directly at its targets - initially the Royal Navy monitors operating off the coast of Flanders. FL-boats were constructed by Siemens-Schuckertwerke. They were driven by internal combustion engines and controlled remotely from a shore station through spooled wire unwound behind the boat. The wire was long and the spool weighed . An aircraft could be used to signal directions to the shore station by radio. The commands available to the boat operator were: * System test * Engine start, engine stop * Set Rudder position * Turn on a light, to enable the boat to be tracked at night * Detonate the warhead, to prevent capture of the boat if it missed its target Planned developments were to use a control station carried on a ship, in an airship or use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Erebus (I02)
HMS ''Erebus'' was a First World War monitor launched on 19 June 1916 and which served in both world wars. She and her sister ship are known as the . They were named after the two bomb vessels sent to investigate the Northwest Passage as part of Franklin's lost expedition (1845–1848), in which all 129 members eventually perished. Monitors were designed as stable gun platforms with a shallow draught to allow operations close inshore in support of land operations, and were not intended to contest naval battles. ''Erebus'' was equipped with two /42 guns in a single forward turret mounted on a tall barbette to extend the range of fire to . The ''Erebus'' class were designed to outrange German heavy shore batteries and they were also fitted with highly effective anti-torpedo bulges on each side of the hull. Background During the First World War, the Royal Navy developed several classes of ships which were designed to give close support to troops ashore through the use of na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Terror (I03)
HMS ''Terror'' was an Erebus class monitor, ''Erebus''-class Monitor (warship), monitor built for the Royal Navy during the First World War in Belfast. Completed in 1916, she was assigned to the Dover Patrol where her primary duties involved bombarding German targets on the coast of German occupation of Belgium during World War I, occupied Belgium, particularly at the ports of Zeebrugge and Ostend. In October 1917 ''Terror'' was hit by three torpedoes, taking severe damage to the bow, and had to be towed into Portsmouth for repair. In April 1918 she participated in the Zeebrugge raid and provided gunnery support for the Fifth Battle of Ypres in September of the same year. After the war the monitor was attached to HMS Excellent (shore establishment), HMS ''Excellent'', the Royal Navy's gunnery school in Portsmouth and participated in gunnery trials in the 1920s. In January 1934 ''Terror'' became the base ship at Singapore Naval Base, Sembawang Naval Base in Singapore in the Str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
