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Admiralty Trawler
Naval trawlers were purpose-built or requisitioned and operated by the Royal Navy (RN), mainly during World Wars I and II. Vessels built to Admiralty specifications for RN use were known as Admiralty trawlers. All trawlers operated by the RN, regardless of origin, were typically given the prefix HMT, for "His Majesty's Trawler". Summary First World War The trawler Viola, built in 1906 at Hull and requisitioned September 1914 is the oldest surviving steam trawler in the world. She is currently beached at Grytviken in South Georgia, though there are currently plans to return her to Hull. Second World War Requisitioned trawlers There were also 215 trawlers of no specific class These were commercial trawlers that the Admiralty requisitioned. The Royal Navy classified requisitioned trawlers by manufacturer, although such classes were more diverse than traditional naval classifications. Seventy-two requisitioned trawlers were lost. See also * Anti-submarine warfare * Auxiliary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Trawler
Naval trawlers are vessels built along the lines of a fishing trawler but fitted out for naval purposes; they were widely used during the First and Second World Wars. Some—known in the Royal Navy as "Admiralty trawlers"— were purpose-built to naval specifications, others adapted from civilian use. Fishing trawlers were particularly suited for many naval requirements because they were robust vessels designed to work heavy trawls in all types of weather, and had large clear working decks. A minesweeper could be created by replacing the trawl with a mine sweep. Adding depth charge racks on the deck, ASDIC sonar below, and a or gun in the bow equipped the trawler for anti-submarine duties. History Armed trawlers were also used to defend fishing groups from enemy aircraft or submarines. The smallest civilian trawlers were converted to danlayers. Contemporary Some nations still use armed trawlers for fisheries protection and patrol. The Indian Navy used naval trawlers for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portuguese-class Naval Trawler
The Portuguese-class trawlers of World War II were naval trawlers, built in Portugal for the Royal Navy. These vessels were built in several Portuguese yards, and offered by Portugal to the Royal Navy. This aid to the British war effort solicited protests by Nazi Germany, since, officially, Portugal was a neutral country. After the war the ships were sold, most of them becoming mercantile vessels, some under the Portuguese flag. The former HMT ''Product'' went to the Royal Hellenic Navy. Ships in class * – Launched 1942, mercantile vessel ''Sjostkerk'' 1964 * – Launched 1942, sold 1946 * – Launched 1942, mercantile vessel ''Portrush'' 1946, ''Property'' 1947 and ''Vaagness'' 1955 * – Launched 1942, sold 1946 * – Launched 1941, sold 1946 * – Launched 1943, sold 1946 * – Launched 1942, mercantile vessel ''Pólo Norte'' 1946 * – Launched 1942, mercantile vessel ''Arrábida'' 1946 * – Launched 1941, sold 1946 * – Launched 1941, minesweeper repair ship 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vorpostenboot
''Vorpostenboot'' (plural ''Vorpostenboote''), also referred to as VP-Boats, flakships or outpost boats, were German patrol boats which served during both World Wars. They were used around coastal areas and in coastal operations, and were tasked with – among other things – coastal patrol, ship escort, and naval combat. Characteristics Armament ''Vorpostenboote'' typically carried one or two medium-calibre guns (e.g. 88 mm), many light automatic anti-aircraft guns (20–40 mm), and a varying number of machine guns. For anti-submarine warfare they were also fitted with depth charges. They were crewed by sixty to seventy men, most of whom were weapons personnel taken from the naval reserve. While ''Vorpostenboote'' were able to engage and defeat light naval forces – such as small motor gun boats – they were not powerful enough to effectively combat destroyers or larger warships. Some ''Vorpostenboote'' (and submarine chasers) were given heavier AA guns and re-rat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Naval Patrol Service
The Royal Naval Patrol Service (RNPS) was a branch of the Royal Navy active during both the First and Second World Wars. The RNPS operated many small auxiliary vessels such as naval trawlers for anti-submarine and minesweeping operations to protect coastal Britain and convoys. History The Royal Naval Patrol Service has its origins in the Great War when the threat of mine warfare was first realized by the British Admiralty. The pre-war Commander-in-Chief of the Home Fleet, Admiral Lord Charles Beresford, is credited with recommending the use of Grimsby trawlers for minesweeping operations following visits he made to various East Coast Ports in 1907. Grimsby, with its impressive docklands and trawler fleet was seen as ideal, with the Commander-in-Chief arguing that the fishing fleet would be inactive in times of war as fishing grounds became war zones.Ministry of Information, ''His Majesty's Minesweepers'', London: His Majesty's Stationery Office, 1943 It was also thought that tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minesweepers Of The Royal New Zealand Navy
Commissioned minesweepers and danlayers of the Royal New Zealand Navy (RNZN) from its formation on 1 October 1941 to the present. The RNZN was created two years into World War II. For coherence this article covers the war years from the start, and thus includes also the New Zealand minesweepers operating from the beginning of the war. World War II minesweepers During World War II the RNZN operated 39 minesweepers and danlayers. This included 20 naval trawlers (13 , three and four ), five converted trawlers, 10 converted merchant boats, and four danlayers. Naval trawlers Naval trawlers were trawlers purpose built to Admiralty specification to operate as minesweepers and/or anti-submarine boats. Castle class Thirteen naval trawlers were commissioned. Apart from ''James Cosgrove'' and ''Wakakura'', all were built in New Zealand by government directive, circa 1942. They were long, displaced 540 tons standard or 612 tons loaded, and were designed for a complement of 27. The three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mine Countermeasure Vessels Of The Royal Navy
Active ships * s ** HMS ''Ledbury'' (M30) ** HMS ''Cattistock'' (M31) ** HMS ''Brocklesby'' (M33) ** HMS ''Middleton'' (M34) ** HMS ''Chiddingfold'' (M37) ** HMS ''Hurworth'' (M39) * s ** HMS ''Penzance'' (M106) ** HMS ''Pembroke'' (M107) ** HMS ''Grimsby'' (M108) ** HMS ''Bangor'' (M109) ** HMS ''Shoreham'' (M112) Historical ships Naval mine clearance was originally done by whatever type of vessel could easily be adapted to the task, paddle steamers proving particularly suited due to their shallow draught. In both World Wars naval trawlers were used, as they were naturally suitable for wire sweeping. In World War II this task was given to smaller trawlers of about 300 tons, larger ones being used for anti-submarine work. The increased sophistication and threat posed by the mine meant that specialist mine countermeasure vessels eventually had to be built: the Minesweeping Sloop. This term was officially dropped in 1937, but remained in use nonetheless. The Royal Nav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auxiliary Patrol
The Auxiliary Patrol was an antisubmarine patrols initiative by the British to help combat German submarine operations in the early stages of World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin .... It was under the command of the Admiral of Patrols at the British Admiralty, Admiralty and was the pioneer of anti-submarine warfare. History On May 1, 1912 the post of Admiral of Patrols was established responsible for five destroyer flotilla's covering waters around the British Isles. In 1914, the Board of Admiralty sent an order the Admiralty War Staff to re-evaluate the functional role the patrol flotillas off the Eastern Coast of Britain the First Sea Lord indicated that the current function of patrolling would now be that of coastal defence. After the implementation took pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-submarine Warfare
Anti-submarine warfare (ASW, or in older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typically carried out to protect friendly shipping and coastal facilities from submarine attacks and to overcome blockades. Successful ASW operations typically involved a combination of sensor and weapon technologies, along with effective deployment strategies and sufficiently trained personnel. Typically, sophisticated sonar equipment is used for first detecting, then classifying, locating, and tracking a target submarine. Sensors are therefore a key element of ASW. Common weapons for attacking submarines include torpedoes and naval mines, which can both be launched from an array of air, surface, and underwater platforms. ASW capabilities are often considered of significant strategic importance, particularly following provocative instan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military-class Trawler
The Military class of Admiralty trawlers was a small class of trawlers built for the Royal Navy during the Second World War. The vessels were intended for use as minesweepers and for anti-submarine warfare, and the design was based on a commercial type, ''Lady Madeleine'' by Cook Welton and Gemmell of Beverley. The purpose of the order was to make use of specialist mercantile shipyards to provide vessels for war use by adapting commercial designs to Admiralty specifications. Between 1941 and 1943 the Royal Navy ordered nine such vessels from Cook Welton and Gemmel. All saw active service, but none were lost in action. The Military-class trawlers were the largest trawlers built for the Royal Navy and bear comparison with the s.Conway p. 67 Ships * ''Bombardier'' (T304), completed 19 May 1943 * ''Coldstreamer'' (T337), completed 10 April 1943 * ''Fusilier'' (T305), completed 30 April 1943 * (T334), completed 10 February 1943 * ''Guardsman'' (T393), completed 22 August 1944 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round Table-class Trawler
The Round Table class was a small class of trawlers built for the British Royal Navy in 1941–1942. The class were built by two Aberdeen shipbuilding firms Hall, Russell & Company and J. Lewis & Sons Ltd. All were built to a 1936 design, the ''Star of Orkney'', by Hall, Russell & Co but were commissioned as minesweepers. Two of the class, ''Sir Galahad'' and ''Sir Lancelot'' were converted to danlayers. Ships The ships (and assigned pennant numbers) in the class were: * ''Sir Agravaine'' (T230) launched 5 March 1942 * ''Sir Galahad'' (T226) launched 18 December 1941 * ''Sir Gareth'' (T227) launched 19 January 1942 * ''Sir Geraint'' (T240) launched 15 April 1942 * ''Sir Kay'' (T241) launched 26 October 1942 * ''Sir Lamorack'' (T242) launched 23 November 1942 * ''Sir Lancelot'' (T228) launched 4 December 1941 * ''Sir Tristram'' (T229) launched 17 January 1942 See also * Trawlers of the Royal Navy Naval trawlers were purpose-built or requisitioned and operated by the R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish-class Trawler
The Fish class of Admiralty trawlers was a small class of naval trawlers built for the British Royal Navy during the Second World War. The vessels were intended for use as minesweepers and for anti-submarine warfare, and the design was based on a commercial type, the 1929 ''Gulfoss'' by Cochrane & Sons, of Selby.Elliott p286 The purpose of the order was to make use of specialist mercantile shipyards to provide vessels for war use by adapting commercial designs to Admiralty specifications. In 1940 the Royal Navy ordered ten such vessels from Cochrane. All saw active service, and two were lost in incidents. ''Corncrake''-type minelayer Two vessels, ''Mackerel'' and ''Turbot'', were converted for use as controlled minelayers while still under construction. Upon completion they were renamed ''Corncrake'' and ''Redshank'', respectively.Conway p67Cocker p24 Ships See also * Trawlers of the Royal Navy Naval trawlers were purpose-built or requisitioned and operated by the Roy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hill-class Trawler
The Hill class of Admiralty trawlers was a small class of trawlers built for the British Royal Navy during the Second World War. The vessels were intended for use as minesweepers and for anti-submarine warfare, and the design was based on a commercial type, the 1937 ''Barnett'' by Cook Welton and Gemmell of Beverley.Elliott p286 The purpose of the order was to make use of specialist mercantile shipyards to provide vessels for war use by adapting commercial designs to Admiralty specifications. In 1940 the Royal Navy ordered eight such vessels from Cook Welton and Gemmell. All saw active service, and two were lost in action. Ships * ''Birdlip'' (T218), completed 11 December 1941: torpedoed, W Africa, 13 June 1944 * '' Bredon'' (T223), completed 2 April 1942: torpedoed, N Atlantic, 8 February 1943 * ''Butser'' (T219), completed 8 January 1942 * ''Duncton'' (T220), completed 27 January 1942 * ''Dunkery'' (T224), completed 23 April 1942 * ''Inkpen'' (T225), completed 23 May 194 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
