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French Submarine Aigrette
''Aigrette'' was the lead boat of the s built for the French Navy between 1902 and 1905. Laid down in May 1902, she was launched in February 1904 and commissioned in 1908. She was essentially an experimental submarine, and although in service during World War I, saw no action. The class was designed by Maxime Laubeuf and used Drzewiecki drop collar launchers and external cradles to launch torpedoes. Design ''Aigrette'' had a surfaced displacement of and a submerged displacement of . Her dimensions were long, with a beam of and a draught of . She had a single shaft powered by one diesel engine for surface running of and an electric motor which produced for submerged propulsion. The maximum speed was on the surface and while submerged with a surfaced range of at and a submerged range of at . Her complement was 14 men.Gardiner, p. 208Fontenoy, p. 79 The submarines armament comprised two Drzewiecki drop collar torpedo launchers and two torpedoes in external cradles. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egret
Egrets ( ) are herons, generally long-legged wading birds, that have white or buff plumage, developing fine plumes (usually milky white) during the breeding season. Egrets are not a biologically distinct group from herons and have the same build. Biology Many egrets are members of the genera ''Egretta'' or '' Ardea'', which also contain other species named as herons rather than egrets. The distinction between a heron and an egret is rather vague, and depends more on appearance than biology. The word "egret" comes from the French word ''aigrette'' that means both "silver heron" and "brush", referring to the long, filamentous feathers that seem to cascade down an egret's back during the breeding season (also called "egrets"). Several of the egrets have been reclassified from one genus to another in recent years; the great egret, for example, has been classified as a member of either ''Casmerodius'', ''Egretta'', or ''Ardea''. In the 19th and early part of the 20th centuries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p.5. This is accomplished by means of its "draft marks" (or "load lines"). A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I Submarines Of France
In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique while others talk of a "plurality of worlds". Some treat the world as one simple object while others analyze the world as a complex made up of many parts. In '' scientific cosmology'' the world or universe is commonly defined as " e totality of all space and time; all that is, has been, and will be". '' Theories of modality'', on the other hand, talk of possible worlds as complete and consistent ways how things could have been. ''Phenomenology'', starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon or the "horizon of all horizons". In ''philosophy of mind'', the world is commonly contrasted with the mind as that which is represented by the mind. ''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Submarines Of France
The submarines of France include nuclear attack submarines and nuclear ballistic missile submarines of various classes, operated by the French Navy as part of the French Submarine Forces. Each French Navy vessel, including French submarines have for military awards and decorations their respective fanion insignia. In service Nuclear attack submarines * *# (1987–present) *# (1988–present) *# (1992–present) *# (1993–present, in repair) * *# ''Suffren'' (Q284) (2020–present) Nuclear ballistic missile submarines * *# (1997–present) *# (1999–present) *# (2004–present) *# (2010–present) Planned Nuclear attack submarines * *# (Launch 9 September 2022) *# (Laid down 2011) *# *# *# Nuclear ballistic missile submarines * SNLE 3G Retired from service Each French submarine from ''Gymnote'' onwards when ordered/constructed was given a sequential hull number (prefixed by the letter 'Q'). The sequence included submarines built in France for for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-submarine Net
An anti-submarine net or anti-submarine boom is a boom placed across the mouth of a harbour or a strait for protection against submarines. Examples of anti-submarine nets * Lake Macquarie anti-submarine boom *Indicator net * Naval operations in the Dardanelles Campaign * Sydney Harbour anti-submarine boom netIsle of Bute during World War II - Anti-submarine net in the Clyde Estuary in Scotland (Item 4) See also *Anti-submarine warfare *Jumping wire (of a submarine) *Net cutter (submarine) *Net laying ship *Torpedo net Torpedo nets were a passive ship defensive device against torpedoes. They were in common use from the 1890s until the Second World War. They were superseded by the anti-torpedo bulge and torpedo belts. Origins With the introduction of the Whitehe ... Anti-submarine warfare Anti-submarine weapons Auxiliary gateship classes References {{reflist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brest, France
Brest (; ) is a port city in the Finistère department, Brittany. Located in a sheltered bay not far from the western tip of the peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon. The city is located on the western edge of continental France. With 142,722 inhabitants in a 2007 census, Brest forms Western Brittany's largest metropolitan area (with a population of 300,300 in total), ranking third behind only Nantes and Rennes in the whole of historic Brittany, and the 19th most populous city in France; moreover, Brest provides services to the one million inhabitants of Western Brittany. Although Brest is by far the largest city in Finistère, the ''préfecture'' (regional capital) of the department is the much smaller Quimper. During the Middle Ages, the history of Brest was the history of its castle. Then Richelieu made it a military harbour in 1631. Brest grew around its arsenal un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull ( keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells In watercraft, a racing shell (also referred to as just a ''fine boat'' (UK) or just ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxime Laubeuf
Maxime Laubeuf was a French maritime engineer of the late nineteenth century. He was born on 23 November 1864 at Poissy, Yvelines, and died on 23 December 1939 in Cannes, Alpes-Maritimes. Laubeuf was a pioneer in the design and building of submarines, and was responsible for a number of the innovations that led to modern submarine design. His work had a profound influence on the design of submersibles in the late nineteenth century and early twentieth century. Laubeuf studied at the Ecole Polytechnique, and after graduating in 1883, he joined ENSTA, the French military's school of Marine Engineering. He became an Assistant Engineer in 1887, and Engineer in 1891. During this time, he worked at Brest on the development of submersibles and designs for the first modern submarines in 1904. Two years later, he left the Navy to continue building submarines in private industry. In 1896, the French government staged a design competition for a submarine of advanced capabilities. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenal De Toulon
The military port of Toulon (french: arsenal de Toulon) is the principal base of the French Navy and the largest naval base in the Mediterranean, sited in the city of Toulon. It holds most of France's force d'action navale, comprising the aircraft carrier '' Charles de Gaulle'' as well as its nuclear attack submarines, in total, the base contains more than 60% of the French Navy's tonnage, and about 20,000 military and civilian personnel work at the base. The ''Rade'' The word ''rade'' comes from the old English term 'Road,' "a protected place near shore, not so enclosed as a harbour, where ships can ride at anchor.". The Rade of Toulon is one of the best natural anchorages on the Mediterranean, and the largest rade in Europe. It is protected from the sea by the peninsula of Giens and the peninsula of Saint-Mandrier-sur-Mer, and has been used as a military harbour since the 15th century. The Rade shelters the port of Saint-Mandrier-sur-Mer, the port of La Seyne-sur-Mer, as w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, 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 Ocean, 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 in history (World War I through World War II), genocides within the Ottoman Empire and in the Spanish flu, 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 French Third Republic, France, Russia, and British Empire, Britain) and the Triple A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Commissioning
Ship commissioning is the act or ceremony of placing a ship in active service and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to placing a warship in active duty with its country's military forces. The ceremonies involved are often rooted in centuries-old naval tradition. Ship naming and launching endow a ship hull with her identity, but many milestones remain before she is completed and considered ready to be designated a commissioned ship. The engineering plant, weapon and electronic systems, galley, and other equipment required to transform the new hull into an operating and habitable warship are installed and tested. The prospective commanding officer, ship's officers, the petty officers, and seamen who will form the crew report for training and familiarization with their new ship. Before commissioning, the new ship undergoes sea trials to identify any deficiencies needing c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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