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Subchaser
A submarine chaser or subchaser is a small naval vessel that is specifically intended for anti-submarine warfare. Many of the American submarine chasers used in World War I found their way to Allied nations by way of Lend-Lease in World War II. Submarine chaser variants U.S. Navy submarine chasers were designed specifically to destroy German submarines in World War I, and Japanese and German submarines in World War II. The small SC-1-class submarine chasers of the design used in World War I carried the hull designator SC (for Submarine Chaser). Their main weapon was the depth charge. They also carried machine guns and anti-aircraft guns. The similar-sized SC-497-class was built for World War II. Also in World War II, larger PC-461-class submarine chasers used the PC hull classification symbol (for Patrol, Coastal).Gardiner and Chesneau, pp. 71, 152-154 Class relationships: * 438 (98t, wooden hull) * 343 (450t, steel hull) * 68 (850t, steel hull) ** used in similar role as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SC-1-class Submarine Chaser
The ''SC-1'' class was a large class of submarine chasers built during World War I for the United States Navy. They were ordered in very large numbers in order to combat attacks by German U-boats, with 442 boats built from 1917 to 1919. Development In 1916, the then Assistant Secretary of the Navy, Franklin D. Roosevelt ordered the US Navy to design a small anti-submarine vessel that could be built quickly in small civilian boatyards, as if war came, larger shipyards would be busy building larger warships.Treadwell, Theodore R"Subchasers of World War I" ''Splinter Fleet''. Retrieved 4 March 2011. Consideration was given to adopting an wooden Motor Launch built in large numbers by Electric Launch Company, ELCO for the British Royal Navy, but the General Board of the United States Navy thought that these boats were too small to be effective seaboats. The task of designing the new type was given to an experienced designer of small boats, Albert Loring Swasey. He drew up a design for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SC-497-class Submarine Chaser
__NOTOC__ The ''SC-497''-class submarine chasers were a class of 438 submarine chasers built primarily for the United States Navy from 1941–1944. The ''SC-497''s were based on the experimental submarine chaser, USS ''SC-453''. Submarine chasers of this variety were collectively nicknamed " the splinter fleet" due to their wooden hulls. History The ''SC-497''s were off-shore patrol and anti-submarine warfare vessels. Seventy of the ''SC-497''s were converted into patrol control crafts (SCC), 18 were converted into coastal minesweepers (AMC), and 8 were converted into patrol gunboats, motor (PGM). Sixteen ''SC-497''s were lost and another one was lost after her conversion into a . Despite the large number of ''SC-497''s, none are credited with destroying an enemy ship. (USS ''SC-669'' is sometimes incorrectly credited with sinking the Japanese submarine ''RO-107'' on 29 May 1943, but ''RO-107'' was still active on 6 July 1943.) During World War II, 142 ''SC-497''-class subm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Launch Company
The Electric Launch Company, later renamed Elco Motor Yachts ("Elco"), is an American boat building and electric motor company that has operated from 1893 to 1949 and from 1987 to the present. History Elco first made its mark at the World's Columbian Exposition of 1893 in Chicago. Fifty-five launches, each 36 feet long and powered by battery-driveelectric motors carried over a million passengers. In 1899 Isaac Rice, president of the Electric Storage Battery Company and owner of Electric Boat Company, now Electro-Dynamic Company, (both suppliers to Elco), acquired Elco as a subsidiary of his new Electric Boat Company. Elco built a new boatyard in Bayonne, New Jersey soon afterward. Previously, Elco boats had been built in subcontracted facilities. By 1900, electric-powered pleasure boats outnumbered the combined number of boats powered by steam and explosive engines (as gasoline-powered motors were called). By 1910, the advantages of the range and power of gasoline came to domi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender in World War II. The Japan Maritime Self-Defense Force (JMSDF) was formed between 1952–1954 after the dissolution of the IJN. The Imperial Japanese Navy was the third largest navy in the world by 1920, behind the Royal Navy and the United States Navy (USN). It was supported by the Imperial Japanese Navy Air Service for aircraft and airstrike operation from the fleet. It was the primary opponent of the Western Allies in the Pacific War. The origins of the Imperial Japanese Navy go back to early interactions with nations on the Asian continent, beginning in the early medieval period and reaching a peak of activity during the 16th and 17th centuries at a time of cultural exchange with European powers during the Age of Discovery. After t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SC-1466-class Submarine Chaser
The Canadian Fairmile B was a motor launch built during the Second World War for the Royal Canadian Navy. They were adaptations of the British Fairmile B motor launch design incorporating slight modifications for Canadian climatic and operational conditions. Eighty-eight were built in Canada for service with the Coastal Forces of the Royal Canadian Navy in home waters, of which eight were supplied to the United States Navy. They were known by their crews as "The Little Ships", "Little Fighting Ships", "Q-Boats", "MLs" or "Holy Rollers" (due to their violent pitching and tossing), History In the spring of 1940 Canada's Naval Staff realized that the Royal Canadian Navy (RCN) needed more vessels equipped with ASDIC sets for anti-submarine patrols in the St. Lawrence River and Pacific Coast. Learning "that the Admiralty was planning to build Type "B" Fairmile motor launches for such work in British waters", the RCN began to investigate the comparative advantages of building and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibious Warfare
Amphibious warfare is a type of offensive military operation that today uses naval ships to project ground and air power onto a hostile or potentially hostile shore at a designated landing beach. Through history the operations were conducted using ship's boats as the primary method of delivering troops to shore. Since the Gallipoli Campaign, specialised watercraft were increasingly designed for landing troops, material and vehicles, including by landing craft and for insertion of commandos, by fast patrol boats, zodiacs (rigid inflatable boats) and from mini-submersibles. The term ''amphibious'' first emerged in the United Kingdom and the United States during the 1930s with introduction of vehicles such as Vickers-Carden-Loyd Light Amphibious Tank or the Landing Vehicle Tracked.The first LVT prototypes were named ''Alligator'' and '' Crocodile'', though neither species is actual amphibian Amphibious warfare includes operations defined by their type, purpose, scale an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific War
The Pacific War, sometimes called the Asia–Pacific War, was the theater of World War II that was fought in Asia, the Pacific Ocean, the Indian Ocean, and Oceania. It was geographically the largest theater of the war, including the vast Pacific Ocean theater, the South West Pacific theater, the Second Sino-Japanese War, and the Soviet–Japanese War. The Second Sino-Japanese War between the Empire of Japan and the Republic of China had been in progress since 7 July 1937, with hostilities dating back as far as 19 September 1931 with the Japanese invasion of Manchuria. However, it is more widely accepted that the Pacific War itself began on 7 December (8 December Japanese time) 1941, when the Japanese simultaneously invaded Thailand, attacked the British colonies of Malaya, Singapore, and Hong Kong as well as the United States military and naval bases in Hawaii, Wake Island, Guam, and the Philippines. The Pacific War saw the Allies pitted against Japan, the latter ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (commerce raiding) and enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from Canada and other parts of the British Empire, and from the United States, to the United Kingdom and (during the Second World War) to the Soviet Union and the Allied territories in the Mediterranean. German submarines also destroyed Brazilian merchant ships during World War II, causing Brazil to declare war on both Germany and Italy on 22 August 1942. The term is an anglicised version of the German word ''U-Boot'' , a shortening of ''Unterseeboot'' ('under-sea-boat'), though the German term refers to any submarine. Austro-Hungarian Navy submarines were also kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, multi-mission service unique among the United States military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. It is the largest and most powerful coast guard in the world, rivaling the capabilities and size of most navies. The U.S. Coast Guard is a humanitarian and security service. It protects the United States' borders and economic and security interests abroad; and defends its sovereignty by safeguarding sea lines of communication and commerce across vast territorial waters spanning 95,000 miles of coastline and its Exclusive Economic Zone. With national and economic security depending upon open global trade a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairmile B Motor Launch
The Fairmile Type-B motor launch was a type of motor launch (often referred to as MLs) built by British boatbuilder Fairmile Marine and others during the Second World War for the Royal Navy for coastal operations. Design While the Type A had been designed entirely by Fairmile, the Type B design had come from Bill Holt of the Admiralty based on the lines of a destroyer hull and the detailed design and production was taken on by Fairmile. Like all their designs it was based on total prefabrication so individual components could be contracted out to small factories for production and these arranged as kits that would be delivered to various boatyards for assembly and fitting out. Altogether approximately 650 boats were built between 1940 and 1945. Like the A Type, the B Type were initially intended as submarine chasers, so the boats were fitted with ASDIC (sonar) as standard. Their main armament initially reflected their anti-submarine focus, with 12 depth charges, a single QF 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairmile A Motor Launch
The Fairmile A motor launch was a type of motor launch designed by Fairmile Marine for the Royal Navy. Development Shortly before the Second World War the British industrialist Noel Macklin submitted to the Admiralty an innovative plan for the series production of a motor launch (vessels for harbour defence and submarine chasing). The design used prefabricated parts, which allowed various small concerns, such as furniture and piano manufacturers, to produce the individual components. These components could then be assembled in separate shipyards. The hull was to be made of double diagonal mahogany planking with plywood frames divided into nine watertight compartments. The Admiralty rejected the concept, and so the prototype was built as a private venture. In July 1939, two months before the outbreak of war, the Admiralty had a change of heart and awarded Macklin a contract to build eleven further Type A Fairmiles. Service The first vessel (ML100) was not completed until May 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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