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French Narval Class Submarine
The ''Narval'' class (''sous-marins d'escadre'', "fleet submarines") were patrol submarines built for the French Navy in the 1950s. Design The ''Narval'' type was an offspring of the ''E-48'' project, inspired by the German Type XXI U-boats of the Second World War, particularly which were brought into French service. Compared to the Type XXI, the ''Narval'' class introduced an entirely new schnorchel system and novel detection systems, gained 33% in operational range on electric power (, compared to the available to the type XXI), and doubled the test depth. The propellers were also particularly studied to minimise noise. The hulls of the ''Narval''s were assembled from seven sections welded together. The engine were two-stroke Diesel engine, diesels made by the French constructor Schneider, which proved unreliable and noisy to the point where the engine section became difficult to man at full power. From 1966 to 1970, the ''Narval''s underwent extensive modernisation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub). Submarines are referred to as ''boats'' rather than ''ships'' regardless of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and submarines were adopted by several navies. They were first used widely during World War I (1914–1918), and are now used in many navy, navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; Blockade runner, blockade running; Ballistic missile submarine, nuclear deterrenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
72nd Parallel North
7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, superstition and philosophy. The seven classical planets resulted in seven being the number of days in a week. 7 is often considered lucky in Western culture and is often seen as highly symbolic. Evolution of the Arabic digit For early Brahmi numerals, 7 was written more or less in one stroke as a curve that looks like an uppercase vertically inverted (ᒉ). The western Arab peoples' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the digit more rectilinear. The eastern Arab peoples developed the digit from a form that looked something like 6 to one that looked like an uppercase V. Both modern Arab forms influenced the European form, a two-stroke form consisting of a ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Narval-class Submarines
French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), a British rock band * "French" (episode), a live-action episode of ''The Super Mario Bros. Super Show!'' * ''Française'' (film), a 2008 film * French Stewart (born 1964), American actor Other uses * French (surname), a surname (including a list of people with the name) * French (tunic), a type of military jacket or tunic * French's, an American brand of mustard condiment * French (catheter scale), a unit of measurement * French Defence, a chess opening * French kiss, a type of kiss See also * France (other) * Franch, a surname * French Revolution (other) * French River (other), several rivers and other places * Frenching (other) * Justice French (other) Justice French may refer to: * C. G. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine Classes
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub). Submarines are referred to as ''boats'' rather than ''ships'' regardless of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and submarines were adopted by several navies. They were first used widely during World War I (1914–1918), and are now used in many navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; blockade running; nuclear deterrence; stealth operations in denied areas when gathering intelligence and doing reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Submarines Of France
The submarines of France include Nuclear submarine, nuclear attack submarines and nuclear ballistic missile submarines of various List of submarine classes, classes, operated by the French Navy as part of the Submarine forces (France), French Submarine Forces. France also builds Scorpène-class submarines for international buyers; the Brazilian submarine Álvaro Alberto, a nuclear-powered boat, will be developed from this platform. Each French Navy vessel, including French submarines have for military awards and decorations their respective fanion insignia. In service Nuclear attack submarines * *# (1992–present) *# (1993–present) * *# French submarine Suffren, ''Suffren'' (Q284/S635) (2020–present) *# French submarine Duguay-Trouin, ''Duguay-Trouin'' (S636) (2023 - present) *# French submarine Tourville, ''Tourville'' (S637) (2024 - present) (working up to full operational status as of late 2024) Nuclear ballistic missile submarines * *# (1997–present) *# (1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Nazaire
Saint-Nazaire (; ; ) is a commune in the Loire-Atlantique department in western France, in traditional Brittany. The town has a major harbour on the right bank of the Loire estuary, near the Atlantic Ocean. The town is at the south of the second-largest swamp in France, called "la Brière". Given its location, Saint-Nazaire has a long tradition of fishing and shipbuilding. The Chantiers de l'Atlantique, one of the largest shipyards in the world, constructed notable ocean liners such as , , and the cruise ship , the largest passenger ship in the world until 2022. Saint-Nazaire was a small village until the Industrial Revolution but became a large town in the second half of the 19th century, thanks to the construction of railways and the growth of the seaport. Saint-Nazaire progressively replaced upstream Nantes as the main haven on the Loire estuary. As a major submarine base for the Kriegsmarine, Saint-Nazaire was subject to a successful British raid in 1942 and was heavily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Ship
A museum ship, also called a memorial ship, is a ship that has been preserved and converted into a museum open to the public for educational or memorial purposes. Some are also used for training and recruitment purposes, mostly for the small number of museum ships that are still operational and thus capable of regular movement. Several hundred museum ships are kept around the world, with around 175 of them organised in the Historic Naval Ships AssociationAbout The Historic Naval Ships Association (the international Historic Naval Ships Association website. Accessed 2008-06-06.) though many are not naval museum ships, from general merchant ships to tugboat, tugs and Lightvessel, lightships. Many, if not most, museum ships are also associated with a maritime museum. Significance Relatively few ships are ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toulon
Toulon (, , ; , , ) is a city in the Provence-Alpes-Côte d'Azur region of southeastern France. Located on the French Riviera and the historical Provence, it is the prefecture of the Var (department), Var department. The Commune of Toulon has a population of 176,198 people (2018), making it France's 13th-largest city. It is the centre of an urban unit with 580,281 inhabitants (2018), the ninth largest in France by population. Toulon is the second largest French city by urban area on the Mediterranean coast after Marseille. Toulon is an important centre for naval construction, fishing, wine making, and the manufacture of aeronautical equipment, armaments, maps, paper, tobacco, printing, shoes, and electronic equipment. The military port of Toulon is the major navy, naval centre on France's Mediterranean coast, home of the French aircraft carrier ''French aircraft carrier Charles de Gaulle, Charles de Gaulle'' and her battle group. The French Mediterranean Fleet is based in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
70th Parallel North
Following are circles of latitude between the 65th parallel north and the 70th parallel north. This includes the Arctic Circle, at 66°33′49.6″ north. 66th parallel north The 66th parallel north is a circle of latitude that is 66 degrees north of the Earth's equatorial plane, approximately south of the Arctic Circle. It crosses the Atlantic Ocean, Europe, Asia and North America. This latitude also roughly corresponds to the minimum latitude in which midnight sun can last all night near the summer solstice. At this latitude midnight sun lasts from about 12 to 29 June, and the sun is visible for 2 hours, 47 minutes during the winter solstice. At midnight on the summer solstice, the altitude of the sun is 0.00°. Around the world Starting at the Prime Meridian and heading eastwards, the parallel 66° north passes through: : 67th parallel north The 67th parallel north is a circle of latitude that is 67 degrees north of the Earth's equatorial plane, approximately 50&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
