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Type IX U-boat
The Type IX U-boat was designed by Nazi Germany's ''Kriegsmarine'' in 1935 and 1936 as a large ocean-going submarine for sustained operations far from the home support facilities. Type IX boats were briefly used for patrols off the eastern United States in an attempt to disrupt the stream of troops and supplies bound for Europe. It was derived from the Type IA, and appeared in various sub-types. Type IXs had six torpedo tubes; four at the bow and two at the stern. They carried six reloads internally and had five external torpedo containers (three at the stern and two at the bow) which stored ten additional torpedoes. The total of 22 torpedoes allowed U-boat commanders to follow a convoy and strike night after night. Some of the IXC boats were fitted for mine operations; as mine-layers they could carry 44 TMA or 66 TMB mines. Secondary armament was provided by one deck gun with 180 rounds. Anti-aircraft armament differed throughout the war. They had two periscopes in the towe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type I Submarine
The Type I U-boat was the first post–World War I attempt to produce an oceangoing submarine for Nazi Germany's ''Kriegsmarine''. Only two Type IAs were built, but the decision to halt production on further boats is believed to be because of political decisions and not because of major faults in the Type I design. Although the boats did not have any major design faults, they were known to be difficult to handle due to their poor stability and slow dive rate. The type was based on the design of the Finnish ''Vetehinen'' class and the Spanish Type E-1, designed by Ingenieurskantoor voor Scheepsbouw (the company also designed the Soviet S class submarine). The design later served as a basis for the development of other types of boats, primarily the VII and IX classes. Constructed by Deschimag in Bremen, the first Type IA was launched on 14 February 1936. The two boats produced, and , were primarily used as training vessels and for propaganda purposes to fly the Nazi flag. In 19 ... [...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] |
Deutsche Werft
Deutsche Werft (English: German Shipyard) was a shipbuilding company in Finkenwerder Rüschpark, Hamburg, Germany. It was founded in 1918 by Albert Ballin and with Gutehoffnungshütte (GHH), ''Allgemeine Elektricitäts-Gesellschaft'' ( AEG) and '' Hamburg Amerikanische Packetfahrt Actien Gesellschaft'' (HAPAG) as investors. In peacetime, Deutsche Werft built merchant ships, such as the HAPAG turbo-electric cargo ships and . In World War II Deutsche Werft built 113 Type IX and XXIII U-boats for the '' Kriegsmarine''. To this end, it operated three camps directly on the company premises (the Deutsche Werft construction site camp, Deutsche Werft Finkenwärder camp and the Rüschkanal Eastern workers' camp), was involved in five camps in the Finkenwerder district and six in the port area, as well as nine camps in the city area. In addition, there were the camps at the Reiherstiegwerft shipyard, which also belonged to Deutsche Werft. In 1968 Deutsche Werft was merged and became pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seebeckwerft
Seebeckwerft A.G. was a German shipbuilding company, located in Bremerhaven at the mouth of the river Weser. Founded in 1876, it became later one of the leading shipbuilding companies in the region. History Seebeckwerft was founded in 1876 in Bremerhaven by ''Georg Seebeck'' (1845 – 1928), a young coppersmith, born in Brake at the Lower-Weser river. In 1876 Georg Seebeck founded a small metal-processing workshop in Geestemünde, a part of the city of Bremerhaven. In 1879 the first ship was constructed, a small steamer. In 1928 the Seebeckwerft became a member of the Deschimag, a cooperation of several German shipyards under the leadership of the Bremen-shipyard A.G. Weser. After WW II the Deschimag was dissolved and Seebeckwerft became subsidiary of A.G. Weser, now named A.G. Weser Seebeckwerft. During World War II Seebeckwerft built 16 Type IX U-boats for the Kriegsmarine. In 1988 the company merged with Schichau Unterweser to become Schichau Seebeckwerft. Ships built by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Of Science And Industry (Chicago)
The Museum of Science and Industry (MSI) is a science museum located in Chicago, Illinois, in Jackson Park, in the Hyde Park neighborhood between Lake Michigan and The University of Chicago. It is housed in the former ''Palace of Fine Arts'' from the 1893 World's Columbian Exposition. Initially endowed by Julius Rosenwald, the Sears, Roebuck and Company president and philanthropist, it was supported by the Commercial Club of Chicago and opened in 1933 during the Century of Progress Exposition. Among the museum's exhibits are a full-size replica coal mine, captured during World War II, a model railroad, the command module of Apollo 8, and the first diesel-powered streamlined stainless-steel passenger train (''Pioneer Zephyr''). History The Palace of Fine Arts (also known as the Fine Arts Building) at the 1893 World's Columbian Exposition was designed by Charles B. Atwood for D. H. Burnham & Co. During the fair, the palace displayed paintings, prints, drawing, sculpture, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of Mexico
The Gulf of Mexico ( es, Golfo de México) is an oceanic basin, ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States; on the southwest and south by the Mexico, Mexican States of Mexico, states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan, and Quintana Roo; and on the southeast by Cuba. The Southern United States, Southern U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida, which border the Gulf on the north, are often referred to as the "Third Coast" of the United States (in addition to its Atlantic and Pacific Ocean, Pacific coasts). The Gulf of Mexico took shape approximately 300 million years ago as a result of plate tectonics.Huerta, A.D., and D.L. Harry (2012) ''Wilson cycles, tectonic inheritance, and rifting of the North American Gulf of Mexico continental margin.'' Geosphere. 8(1):GES00725.1, first p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U-505 Engine Gauge Telegraph
U5 or U-5 may refer to: Vehicles and transportation Air transport * The IATA designator code for USA3000 Airlines Automobiles * Aiways U5, a Chinese compact electric SUV * Luxgen U5, a Tawianese subcompact SUV Roads and routes * U5 (Berlin U-Bahn), a subway line in Berlin, Germany * ''U-5'', a subway line on the Munich U-Bahn in Germany * Utah State Route 5, two different highways Submarines * German submarine ''U-5'', one of several German submarines ** the lead boat of the class * ''U-5'' class submarine (Austria-Hungary), a class of three submarines built 1908–1911 ** SM ''U-5'' (Austria-Hungary), the lead boat of the class Statistics * U5, an unemployment figure released by the United States Bureau of Labor Statistics Science * U5 spliceosomal RNA * mtDNA haplogroup U5, a subdivision of Haplogroup U (mtDNA) Haplogroup U is a human mitochondrial DNA haplogroup (mtDNA). The clade arose from haplogroup R, likely during the early Upper Paleolithic. Its various subclad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Günter Hessler
Günter Hessler (14 June 1909 – 4 April 1968) was a German naval officer during World War II. He commanded the Type IXB U-boat , sinking twenty-one ships on three patrols, totalling of Allied shipping. Hessler was a recipient of the Knight's Cross of the Iron Cross and was commissioned after the war to write an account of the U-boat war by the British Ministry of Defence. Military career Günter Hessler joined the ''Reichsmarine'' of the Weimar Republic on 5 April 1927 as a member of "Crew 1927" (the incoming class of 1927). He underwent basic military training in the 8th company, 2nd department of the standing ship division of the Baltic Sea in Stralsund (5 April 1927 – 3 July 1927). Hessler was then transferred to the training ship SSS ''Niobe'' (4 July 1927 – 31 October 1927), attaining the rank of ''Seekadett'' (midshipman) on 1 October 1927. After more than 16 months aboard the light cruiser (1 November 1927 – 17 March 1929) he underwent officer c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freetown
Freetown is the capital and largest city of Sierra Leone. It is a major port city on the Atlantic Ocean and is located in the Western Area of the country. Freetown is Sierra Leone's major urban, economic, financial, cultural, educational and political centre, as it is the seat of the Government of Sierra Leone. The population of Freetown was 1,055,964 at the 2015 census. The city's economy revolves largely around its harbour, which occupies a part of the estuary of the Sierra Leone River in one of the world's largest natural deep water harbours. Although the city has traditionally been the homeland of the Sierra Leone Creole people, the population of Freetown is ethnically, culturally, and religiously diverse. The city is home to a significant population of all of Sierra Leone's ethnic groups, with no single ethnic group forming more than 27% of the city's population. As in virtually all parts of Sierra Leone, the Krio language of the Sierra Leone Creole people is Freetown's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Drumbeat
The "Second Happy Time" (; officially Operation Paukenschlag ("Operation Drumbeat"), and also known among German submarine commanders as the "American Shooting Season") was a phase in the Battle of the Atlantic during which Axis powers, Axis submarines attacked merchant shipping and Allied naval vessels along the east coast of North America. The First Happy Time, first "Happy Time" was in 1940–1941 in the North Atlantic and North Sea. Adolf Hitler and Benito Mussolini declared war on the United States on 11 December 1941, and as a result their navies could begin the "Second Happy Time". The "Second Happy Time" lasted from January 1942 to about August of that year and involved several German naval operations, including Operation Neuland. German submariners named it the "Happy Time" or the "Golden Time," as defense measures were weak and disorganized, and the U-boats were able to inflict massive damage with little risk. During this period, Axis submarines sank 609 ships totalin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinhard Hardegen
''Korvettenkapitän'' Reinhard Hardegen (18 March 1913 – 9 June 2018) was a German U-boat commander during World War II. He was credited with the sinking of 25 ships (2 were later refloated), at a total of 136,661 tons. After the war, he spent a year and a half as a British prisoner-of-war before starting a successful oil trading business and serving as a member of Bremen's city council (the '' Bürgerschaft'') for over 32 years. World War II Hardegen served as ''1.WO'' (First Watch Officer) under ''Kapitänleutnant'' Georg-Wilhelm Schulz aboard and, after two war patrols, was given his own command, the Type IID U-boat , operating out of Kiel, on 11 December 1940. The boat was ready for its first patrol shortly before the new year and, after visiting the U-boat base in Bergen, ''U-147'' was ordered to patrol the convoy routes north of the Hebrides. On the second day of the patrol, Hardegen fired a torpedo which failed to detonate against a large merchant ship, before being fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
