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In the early months of the Second World War, Germany made extensive use of magnetic mines, which led to a requirement for a wooden minesweeper, less vulnerable than steel trawlers. [1] The resultant design, the 105 ft-class [ 2 ] (also known as the MMS 1 series [ 3 ] and later the Type 1501 series [ 4 ] ) was built between 1940 and 1944.
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 ...
They often contain inherent anti-sweeping mechanisms. For example, they may be programmed to respond to the unique noise of a particular ship-type, its associated magnetic signature and the typical pressure displacement of such a vessel. As a result, a mine-sweeper must accurately guess and mimic the required target signature to trigger detonation.
A street sweeper or street cleaner is a person or machine that cleans streets. People have worked in cities as "sanitation workers" since sanitation and waste removal became a priority. A street-sweeping person would use a broom and shovel to clean off litter, animal waste and filth that accumulated on streets. Later, water hoses were used to ...
They also provided the backbone of the UK's Fishery Protection Squadron (4th MCM). With the rundown of the Royal Navy fleet in the 1960s, many were sent to become base ships for the Royal Naval Reserve allowing reserve crews to get to sea for short periods without a lot of effort to organise a crew of significant size. Some of these had their ...
Magnetic and acoustic minesweeping gear was fitted to the new Gleaves-class minesweepers, while armament was somewhat reduced from the former destroyer configuration to three 5 in guns, no torpedo tubes, two K-guns for launching depth charges, four 40 mm guns, likely Bofors, in two twin mounts, and seven 20 mm Oerlikon antiaircraft guns on the ...