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USS Courser (AMS-6)
USS ''Courser'' (MSC(O)-6/AMS-6/YMS-201) was a built for the United States Navy during World War II. She was the second ship of the U.S. Navy to be named ''Courser''. History ''Courser'' was laid down as ''YMS-201'' on 28 August 1942 by the Hiltebrant Dry Dock Co. of Kingston, New York Kingston is a Administrative divisions of New York#City, city in and the county seat of Ulster County, New York, United States. It is north of New York City and south of Albany, New York, Albany. The city's metropolitan area is grouped with t ...; launched 19 November 1942; and completed 24 July 1943. On 17 February 1947, ''YMS-201'' was reclassified as AMS-6, and named ''Courser'' the following day. ''Courser'' was reclassified MSC(O)-6 on 7 February 1955. ''Courser'' was struck from the Naval Vessel Register on 1 November 1959. Her ultimate fate is unknown. References * * External links * {{DEFAULTSORT:Courser (AMS-6) YMS-1-class minesweepers of the United States Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oerlikon 20 Mm Cannon
The Oerlikon 20 mm cannon is a series of autocannons, based on an original German Becker Type M2 20 mm cannon design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II. Many versions of the cannon are still used today. Blowback-operated models History Origins During World War I, the German industrialist Reinhold Becker developed a 20 mm caliber cannon, known now as the 20 mm Becker using the advanced primer ignition blowback (API blowback) method of operation. This used a 20×70mmRB cartridge and had a cyclic rate of fire of 300 rpm. It was used on a limited scale as an aircraft gun on ''Luftstreitkräfte'' warplanes, and an anti-aircraft gun towards the end of that war. Because the Treaty of Versailles banned further production of such weapons in Germany, the patents and design works were transferred in 1919 to the Swiss firm SEMAG (''Seeba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
