|
French Submarine Narval (Q4)
French submarine ''Narval'' (“Narwhal”) was a pioneering vessel of the French Navy, designed by Maxime Laubeuf and built at the end of the 19th century. She was designed in response to a competition set by the French Admiralty and had several revolutionary features which set the pattern for submarines for the next 50 years. Background During the 19th century the French navy was a pioneer in submarine design. From the first practical submarine, ''Nautilus (1800 submarine), Nautilus'', in 1800, and the first mechanically powered submarine, ''French submarine Plongeur, Plongeur'', in 1863, France had shown a keen interest in submarines as a way of off-setting the naval superiority of her nearest neighbour, Britain.Miller p116 In 1886 France had built ''French submarine Gymnote (Q1), Gymnote'', the first electrically powered submarine, solving the problem of a reliable underwater propulsion system. This was followed with ''Sirene'', an enlarged version of ''Gymnote'' (and renam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narwhal
The narwhal, also known as a narwhale (''Monodon monoceros''), is a medium-sized toothed whale that possesses a large "tusk" from a protruding canine tooth. It lives year-round in the Arctic waters around Greenland, Canada and Russia. It is one of two living species of whale in the family Monodontidae, along with the beluga whale, and the only species in the genus ''Monodon''. The narwhal males are distinguished by a long, straight, helical tusk, which is an elongated upper left canine. The narwhal was one of many species described by Carl Linnaeus in his publication ''Systema Naturae'' in 1758. Like the beluga, narwhals are medium-sized whales. For both sexes, excluding the male's tusk, the total body size can range from ; the males are slightly larger than the females. The average weight of an adult narwhal is . At around 11 to 13 years old, the males become sexually mature; females become sexually mature at about 5 to 8 years old. Narwhals do not have a dorsal fin and thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Submarine Morse (Q3)
French submarine ''Morse'' (“ Walrus”) was an early submersible built for the French Navy at the end of the 19th century. She was designed by French naval engineer Gaston Romazotti and remained in service until 1909, when she was superseded by more advanced designs. Construction ''Morse'' was designed by French naval engineer Gaston Romazotti, who was chief engineer at the Arsenal de Cherbourg and an early submarine pioneer, having worked with Gustave Zédé on both ''Gymnote'' and ''Sirene'' (later renamed for Zédé after his death). ''Morse'' was designed to combine the best features of both vessels. ''Morse'' was laid down at Cherbourg in June 1897 and launched two years later in July 1899. She was of single-hulled construction, and built of Roma-bronze, a copper alloy of Romazotti's devising, which was intended to be more flexible than an all-steel hull, and which would interfere less with the vessels magnetic compass. ''Morse'' was powered by a 284 cv electric motor, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Submarine
A nuclear submarine is a submarine powered by a nuclear reactor, but not necessarily nuclear-armed. Nuclear submarines have considerable performance advantages over "conventional" (typically diesel-electric) submarines. Nuclear propulsion, being completely independent of air, frees the submarine from the need to surface frequently, as is necessary for conventional submarines. The large amount of power generated by a nuclear reactor allows nuclear submarines to operate at high speed for long periods, and the long interval between refuelings grants a range virtually unlimited, making the only limits on voyage times being imposed by such factors as the need to restock food or other consumables. The limited energy stored in electric batteries means that even the most advanced conventional submarine can only remain submerged for a few days at slow speed, and only a few hours at top speed, though recent advances in air-independent propulsion have somewhat ameliorated this disadv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teardrop Hull
A teardrop hull is a submarine hull design which emphasizes submerged performance over surfaced performance. It was somewhat commonly used in the early stages of submarine development, but was gradually abandoned in the early 20th century in favour of designs optimized for high performance on the surface as a result of changes in operational doctrine. Although naval doctrine changed, design practices remained until the later parts of World War II when the German Kriegsmarine suffered ever-growing losses of submarines in the Battle of the Atlantic. In an attempt to combat the growing threat of allied anti-submarine efforts, experimental design concepts dating back to the late interbellum were shoehorned into the existing submarine design process, resulting in a small number of hydrogen peroxide-powered submarines as well as the Elektroboot family of diesel-electric submarine classes. Although too late and too few to turn the war around, examination of these boats in the immedia ... [...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] |
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Submarine Narval
The French Navy has operated four submarines named ''Narval'' ( Fr. “Narwhal”) * , a pioneering submarine of the late 19th century * , a of the 1920s * , ex-Italian submarine ''Bronzo'' (an ), captured by the Royal Navy and transferred to the FNFL The Free French Naval Forces (french: Forces Navales Françaises Libres, or FNFL) were the naval arm of the Free French Forces during the Second World War. They were commanded by Admiral Émile Muselier. History In the wake of the Armistice a ... in 1944 * , lead ship of the ''Narval''-class submarines of the 1950s {{DEFAULTSORT:Narval French Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Philip Holland
John Philip Holland ( ga, Seán Pilib Ó hUallacháin/Ó Maolchalann) (24 February 184112 August 1914) was an Irish engineer who developed the first submarine to be formally commissioned by the US Navy, and the first Royal Navy submarine, ''Holland 1''. Early life Holland, the second of four siblings, all boys, was born in a coastguard cottage in Liscannor, County Clare, Ireland''John P. Holland (1841–1914) – Inventor of the Modern Submarine'' by Richard K. Morris, United States Naval Institute (publisher), Annapolis, MD: © 1966, Library of Congress Catalog Card No. 66-20239, pp. 13–14. where his father, John Sr., was a member of the Royal Coastguard Service. His mother, a native Irish speaker from Liscannor, Máire Ní Scannláin (aka Mary Scanlan), was John Holland's second wife; his first, Anne Foley Holland, believed to be a native of Kilkee, died in 1835. The area was heavily Irish-speaking and Holland learned English properly only when he attended the local Englis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thorsten Nordenfelt
Thorsten Nordenfelt (1 March 1842 – 8 February 1920), was a Swedish inventor and industrialist. Career Nordenfelt was born in Örby outside Kinna, Sweden, the son of a colonel. The surname was and is often spelled Nordenfeldt, though Thorsten and his brothers always spelled it Nordenfelt, and the 1881 Census shows it as Nordenfelt. The family home in that year was Leinster Lodge on the Uxbridge Road, Paddington in west London. Thorsten worked for a Swedish company in London from 1862 to 1866 and migrated to England in 1867 when he married Emma Stansfeld Grundy. Thorsten Nordenfelt and his brother-in-law started a small business to trade Swedish steel for British rails in 1867. Later on he founded ''Nordenfelt Guns and Ammunition Company, ltd'' to develop a machine-gun designed by Helge Palmcrantz that would be referred to as the Nordenfelt gun. His company also designed a range of anti-torpedoboat guns in calibres from 37 to 57 mm, that were produced in Erith, Kent, Stock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resurgam
''Resurgam'' (Latin: ''"I shall rise again"'') is the name given to an early Victorian submarine and its prototype, designed and built in Britain by Reverend George Garrett. She was intended as a weapon to penetrate the chain netting placed around ship hulls to defend against attack by torpedo vessels. ''Resurgam'' I The first ''Resurgam'', built in 1878, was a 14 ft (5 m), hand powered, one-man vessel nicknamed "the curate's egg" due to her shape. She was a one-third size prototype for Garrett's design. ''Resurgam'' II Construction The second ''Resurgam'' was built by Cochran & Co. at Birkenhead, England, and launched on 26 November 1879. Her construction was of iron plates fastened to iron frames, with the central section of the vessel clad with wood secured by iron straps. As built, she was long by in diameter, weighed , and had a crew of three. She was powered by a closed cycle steam engine originally patented in 1872 by the American engineer Emile Lamm which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Garrett (inventor)
George William Littler Garrett (4 July 1852 – 26 February 1902) was a British clergyman and inventor who pioneered submarine design. Early life He was brought up in Moss Side in Manchester, Lancashire, England, the son of an Irish-born Church of England curate. He attended Rossall School near Fleetwood and then Manchester Grammar School, then studied Chemistry and General Science at Owens College (also in Manchester) before attending Trinity College, Dublin. He was appointed assistant master at the Manchester Mechanics' Institute and subsequently obtained a BA degree. In 1873, he passed the Cambridge Theological Examination and became a curate in his father's parish. Inventions He invented a diving suit in 1877, demonstrating it to the French government in the River Seine. An interest in the possible military application of what at the time were known as submarine boats prompted him to form the Garrett Submarine Navigation and Pneumatophore Company Limited and raise £ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Hull
A submarine hull has two major components, the ''light hull'' and the ''pressure hull''. The light hull (''casing'' in British usage) of a submarine is the outer non-watertight hull which provides a hydrodynamically efficient shape. The pressure hull is the inner hull of a submarine that maintains structural integrity with the difference between outside and inside pressure at depth. Shapes Modern submarines are usually cigar-shaped. This design, already visible on very early submarines, is called a "teardrop hull". It is structurally efficient for withstanding external pressure, and significantly reduces the hydrodynamic drag on the sub when submerged, but decreases the sea-keeping capabilities and increases drag while surfaced. History The concept of an outer hydrodynamically streamlined light hull separated from the inner pressure hull was first introduced in the early pioneering submarine Ictineo I designed by the Spanish inventor Narcís Monturiol in 1859. However, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Resurgam")
.jpg "Click for more on -> George Garrett (inventor)")