Anti-submarine indicator loop
- Anti-submarine indicator loop
An anti-submarine indicator loop was a submerged cable laid on the sea bed used to detect the passage of enemy submarines. Developed by the Royal Navy during World War I, they were extensively used by the Allies during World War II to protect harbours against submarine attack. [cite web|url=http://indicatorloops.com/loopworks.htm |title=What are Indicator Loops and how do they work? | accessdate=2008-06-10 |work=Indicatorloops.com ]
They worked as induction loops – the submarine's magnetism induced a current in the cable as the submarine passed across it. The technology was first developed at the Portland Naval Base in 1915 and the first operational use was at the Grand Fleet's anchorage at Scapa Flow. The German submarine UB-116 was detected by hydrophones at 21:21 on 28 October 1918 attempting to enter the flow via Hoxa Sound. Two hours later (at 23:32) current was detected in an indicator loop laid in a remotely controlled minefield, induced by the submarine at it passed over the cables. Mines around the loop were detonated by remote control, sinking the submarine. [cite book |last= Lecane | first= Philip |title= Torpedoed! The R.M.S. Leinster Disaster |year=2005 |publisher=Periscope Publishing Ltd |isbn=1904381294 |pages=92 | url=] It was the last U-boat destroyed by enemy action before the Armistice. [cite web | url = http://www.submerged.co.uk/UB116.php | title = UB.116 | accessdate = 2008-06-10 |work = Submerged - Shipwrecks And Scuba Diving Around Devon And The World ]
References
Wikimedia Foundation.
2010.
Look at other dictionaries:
Anti-submarine warfare — (ASW or in older form A/S) is a branch of naval warfare that uses surface warships, aircraft, space craft or other submarines to find, track and then damage or destroy enemy submarines. Like many forms of warfare, successful anti submarine… … Wikipedia
Induction loop — This article is about a detection system. For the more general electrical component, see Inductor. Induction loop is a term used to describe an electromagnetic communication and detection system, relying on the fact that a moving magnet will… … Wikipedia
Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… … Wikipedia
Oban — For other uses, see Oban (disambiguation). Coordinates: 56°24′44″N 5°28′13″W / 56.412356°N 5.470232°W / 56.412356; 5.470232 … Wikipedia
HMCS Sackville (K181) — is a Flower class corvette that served in the Royal Canadian Navy and later served as a civilian research vessel. She is now a museum ship and the last surviving Flower class corvette.Wartime service Sackville was commissioned into the Canadian… … Wikipedia
Залив Манза — Координаты: 4°56′35″ ю. ш. 39°09′20″ в. д. / 4.943056° ю. ш. 39.155556° в. д. … Википедия
Attack on Sydney Harbour — Infobox Military Conflict conflict=Attack on Sydney Harbour partof=the Battle for Australia during World War II caption=1 June 1942. A Japanese Ko hyoteki class midget submarine, believed to be Midget No. 14, is raised from Sydney Harbour date=31 … Wikipedia
Abkürzungen/Luftfahrt/L–R — Dies ist der vierte Teil der Liste Abkürzungen/Luftfahrt. Liste der Abkürzungen Teil 1 A A Teil 2 B–D B; C; D Teil 3 E–K … Deutsch Wikipedia
Sovereign Base Areas — The Sovereign Base Areas are military bases located on territory in which the United Kingdom is sovereign [p.73, Woodliffe] , but which are separated from the ordinary British territory.The two current Sovereign Base Areas are located adjacent to … Wikipedia
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
