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Submarine Signals
Submarine signals had a specific, even proprietary, meaning in the early 20th century. It applied to a navigation aid system developed, patented and produced by the Submarine Signal Company of Boston. The company produced submarine acoustic signals, first bells and receivers then transducers, as aids to navigation. The signals were fixed, associated with lights and other fixed aids, or installed aboard ships enabling warning of fixed hazards or signaling between ships. ATLAS-Werke, at the time Norddeutsche Maschinenund Armaturenfabrik, of Germany also manufactured the equipment under license largely for the European market. The system used more reliable underwater sound to project acoustic signals from a shore station or an undersea hazard on which a signal was placed. The signals were usually associated with a lightvessel, a bell buoy or hung on a tripod frame on the sea floor connected to a shore stations by cable. At first the system depended on bells operated by electric stri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Types Of Submarine Signals
Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Type (Unix), a command in POSIX shells that gives information about commands. * Type safety, the extent to which a programming language discourages or prevents type errors. * Type system, defines a programming language's response to data types. Mathematics * Type (model theory) * Type theory, basis for the study of type systems * Arity or type, the number of operands a function takes * Type, any proposition or set in the intuitionistic type theory * Type, of an entire function#Order and type, entire function ** Exponential type Biology * Type (biology), which fixes a scientific name to a taxon * Dog type, categorization by use or function of domestic dogs Lettering * Type is a design concept for lettering used in typography which helped br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cunard Line
Cunard () is a British shipping and cruise line based at Carnival House at Southampton, England, operated by Carnival UK and owned by Carnival Corporation & plc. Since 2011, Cunard and its three ships have been registered in Hamilton, Bermuda. In 1839, Samuel Cunard was awarded the first British transatlantic steamship mail contract, and the next year formed the British and North American Royal Mail Steam-Packet Company in Glasgow with shipowner Sir George Burns together with Robert Napier, the famous Scottish steamship engine designer and builder, to operate the line's four pioneer paddle steamers on the Liverpool–Halifax–Boston route. For most of the next 30 years, Cunard held the Blue Riband for the fastest Atlantic voyage. However, in the 1870s Cunard fell behind its rivals, the White Star Line and the Inman Line. To meet this competition, in 1879 the firm was reorganised as the Cunard Steamship Company, Ltd, to raise capital. In 1902, White Star joined the Ame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Noma (SP-131)
USS ''Noma'' (SP-131) was the private steam yacht ''Noma'', built in 1902 on Staten Island and loaned to the U.S. Navy during World War I as a patrol craft assigned to protect shipping from German submarines. At war’s end she served the American Relief Commission in Constantinople and the Black Sea before being returned to her owner after decommissioning. In the 1930s she was converted to a salvage tug, owned in Italy as ''Salvatore Primo'', and torpedoed during World War II. Construction and service as a private yacht ''Noma'' was a large steam yacht, designed by Tams, Lemoine & Crane and built by the Burlee Dry Dock Co. of Staten Island, New York, Yard No. 235, and launched on 11 February 1902. She was built for William Bateman Leeds, the "Tin Plate King", who had married Nonnie May Stewart Worthington in 1900 and the following year sold his tin-plate business to US Steel for $40 million. The yacht measured when built, with a lengths of ( pp) and ( oa), a beam of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RMS Lusitania
RMS ''Lusitania'' (named after the Roman province in Western Europe corresponding to modern Portugal) was a British ocean liner that was launched by the Cunard Line in 1906 and that held the Blue Riband appellation for the fastest Atlantic crossing in 1908. It was briefly the world's largest passenger ship until the completion of the three months later. She was sunk on her 202nd trans-Atlantic crossing, on 7 May 1915, by a German U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role ... off the southern coast of Ireland, killing 1,198 passengers and crew. The sinking occurred about two years before the United States declaration of war on Germany (1917), United States declaration of war on Germany. Although the ''Lusitania''s sinking was a major factor in building America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Nautical Terms (A-L)
This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin ''nauticus'', from Greek ''nautikos'', from ''nautēs'': "sailor", from ''naus'': "ship". Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology, Glossary of rowing terms, and Glossary of meteorology. This glossary is split into two articles: * terms starting with the letters A to L are at Glossary of nautical terms (A-L) * terms starting with the letters M to Z are at Glossary of nautical terms (M-Z). __NO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes, which are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, Huron, Lake Erie, Erie, and Lake Ontario, Ontario and are in general on or near the Canada–United States border. Hydrologically, lakes Lake Michigan–Huron, Michigan and Huron are a single body joined at the Straits of Mackinac. The Great Lakes Waterway enables modern travel and shipping by water among the lakes. The Great Lakes are the largest group of freshwater lakes on Earth by total area and are second-largest by total volume, containing 21% of the world's surface fresh water by volume. The total surface is , and the total volume (measured at the low water datum) is , slightly less than the volume of Lake Baikal (, 22–23% of the world's surface fresh water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Commerce
The United States Department of Commerce is an executive department of the U.S. federal government concerned with creating the conditions for economic growth and opportunity. Among its tasks are gathering economic and demographic data for business and government decision making, and helping to set industrial standards. Its main purpose is to create jobs, promote economic growth, encourage sustainable development and block harmful trade practices of other nations.Steve Charnovitz, "Reinventing the Commerce Dept.", ''Journal of Commerce'', July 12, 1995. It is headed by the Secretary of Commerce, who reports directly to the President of the United States and is a member of the president's Cabinet. The Department of Commerce is headquartered in the Herbert C. Hoover Building in Washington, DC. History Organizational history The department was originally created as the United States Department of Commerce and Labor on February 14, 1903. It was subsequently renamed the Departme ... [...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] |
Nantucket Shoals
Nantucket Shoals is an area of dangerously shallow water in the Atlantic Ocean that extends from Nantucket Island, Massachusetts, eastward for and southeastward for ; in places water depth can be as shallow as . Depth soundings are unpredictable due to the constant change caused by strong currents, which are rotary rather than reversing. The shoals lie just off of a major transatlantic shipping lane. Numerous ships have been wrecked here, most recently and notably the oil tanker '' Argo Merchant'' in December 1976. Until 1983, the edge of the shoals was guarded by the Nantucket Lightship. Nantucket Shoals is made up of the following features: *Asia Rip *Davis Bank *Fishing Rip *Middle Rip *Phelps Bank According to the 2010 edition of the '' United States Coast Pilot'', the International Maritime Organization has established an "area to be avoided" for the Nantucket Shoals. Vessels transporting oil or hazardous materials and vessels of more than 1,000 gross tons Gross tonnage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weser
The Weser () is a river of Lower Saxony in north-west Germany. It begins at Hannoversch Münden through the confluence of the Werra and Fulda. It passes through the Hanseatic city of Bremen. Its mouth is further north against the ports of Bremerhaven and Nordenham. The latter is on the Butjadingen Peninsula. It then merges into the North Sea via two highly saline, estuarine mouths. It connects to the canal network running east-west across the North German Plain. The river, when combined with the Werra (a dialectal form of "Weser"), is long and thus, the longest river entirely situated within Germany (the Main, however, is the longest if the Weser and Werra are not combined). The Weser itself is long. The Werra rises in Thuringia, the German state south of the main projection (tongue) of Lower Saxony. Etymology "Weser" and "Werra" are the same words in different dialects. The difference reflects the old linguistic border between Central and Low German, passing through H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norddeutscher Lloyd
Norddeutscher Lloyd (NDL; North German Lloyd) was a German shipping company. It was founded by Hermann Henrich Meier and Eduard Crüsemann in Bremen on 20 February 1857. It developed into one of the most important German shipping companies of the late 19th and early 20th centuries, and was instrumental in the economic development of Bremen and Bremerhaven. On 1 September 1970, the company merged with Hamburg America Line (HAPAG) to form Hapag-Lloyd AG. History Establishment of the NDL The German shipping company North German Lloyd (NDL) was founded by the Bremen merchants Hermann Henrich Meier and Eduard Crüsemann on 20 February 1857, after the dissolution of the Ocean Steam Navigation Company, a joint German-American enterprise. The new shipping company had no association with the British maritime classification society Lloyd's Register; in the mid-19th century, "Lloyd" was used as a term for a shipping company (an earlier user of the term in the same context was the Trieste- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinity House
"Three In One" , formation = , founding_location = Deptford, London, England , status = Royal Charter corporation and registered charity , purpose = Maintenance of lighthouses, buoys and beacons , headquarters = Trinity House, Tower Hill, London, England , region = , membership = , leader_title = Master , leader_name = Anne, Princess Royal , leader_title2 = Deputy Master , leader_name2 = Captain Ian McNaught , revenue = £38,405,000 (2020) , expenses = £46,801,000 (2020) , staff = 312 (2020) , website trinityhouse.co.uk The Corporation of Trinity House of Deptford Strond, also known as Trinity House (and formally as The Master, Wardens and Assistants of the Guild Fraternity or Brotherhood of the most glorious and undivided Trinity and of St Clement in the Parish of Deptford Strond in the County of Kent), is the offi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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