M-class minesweeper (Germany)

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M1940 series minesweeper in 1941
Class overview
Name: M class
Operators:
Subclasses:
  • M1935
  • M1940
  • M1943
Built: 1937–1945
Completed:
  • M1935 : 69
  • M1940 : 127
  • M1943 : 18
Lost:
  • M1935 : 35
  • M1940 : 63
  • M1943 : 1
General characteristics : M1935[1]
Displacement:
  • 682 long tons (693 t) standard
  • 874 long tons (888 t) full load
Length: 68.4 m (224 ft 5 in)
Beam: 8.5 m (27 ft 11 in)
Draught: 2.65 m (8 ft 8 in)
Propulsion: 2 shaft VTE engines with exhaust turbines, 2 oil-fired boilers, 3,200 hp (2,386 kW)
Speed: 18 knots (33 km/h; 21 mph)
Complement: 113
Armament:
  • 2 × 105 mm (4.1 in) guns
  • 2 × 37 mm guns
  • 2 × 20 mm guns
General characteristics : M1940[2]
Displacement:
  • 543 long tons (552 t) standard
  • 775 long tons (787 t) full load
Length: 62.3 m (204 ft 5 in)
Beam: 8.5 m (27 ft 11 in)
Draught: 2.8 m (9 ft 2 in)
Propulsion: 2 shaft VTE engines with exhaust turbines, 2 coal-fired boilers , 2,400 hp (1,790 kW)
Speed: 16 knots (30 km/h; 18 mph)
Complement: 80
Armament:
  • 1 × 105 mm (4.1 in) gun
  • 1 × 37 mm gun
  • 6-8 × 20 mm guns
General characteristics : M1943[3]
Displacement:
  • 582 long tons (591 t) standard
  • 821 long tons (834 t) full load
Length: 67.8 m (222 ft 5 in)
Beam: 9 m (29 ft 6 in)
Draught: 2.7 m (8 ft 10 in)
Propulsion: 2 shaft VTE engines with exhaust turbines, 2 coal-fired boilers, 2,400 hp (1,790 kW)
Speed: 16 knots (30 km/h; 18 mph)
Complement: 107
Armament:
  • 2 × 105 mm (4.1 in) guns
  • 2 × 37 mm guns
  • 6-8 × 20 mm guns

The M class were the standard minesweeper (German: Minensuchboot) of Nazi Germany's Kriegsmarine during World War II.

History

M1935

File:Bundesarchiv Bild 101II-MW-5896-33, Frankreich, Minensuchboot.jpg
M1935 vessel in occupied France in 1941

The first series; the M1935 were ordered in the late 1930s to replace worn out World War I vintage boats. These ships proved versatile and seaworthy. The vessels could also undertake convoy escort, anti-submarine warfare and minelaying tasks as well as minesweeping. However, the ships were very expensive and complicated to build, and their oil-fired boilers meant they suffered from the fuel shortages in the later years of the war. A total of 69 ships were built in eight different shipyards, between 1937 and 1941. 34 were lost during the war.[4]

M1940

Although the M1935 was a very satisfactory vessel, it was complex and expensive to build and a simplified design was put into production in 1941. These ships had coal-fired boilers because of oil shortages. A total of 127 ships were built between 1941 and 1944, and 63 M1940 class ships were sunk during the war.[5]

M1943

This was a further simplified and slightly enlarged version of the M1940. These ships were designed for pre-fabrication and were produced in four versions:

  • Minesweeper
  • Anti-submarine vessel with extra depth charges
  • Torpedo boat, with two 533 mm (21 in) torpedo tubes
  • Torpedo training vessel

Only 18 vessels were completed by the time the war ended.[6]

Post-war

File:Bundesarchiv Bild 183-2005-0715-510, Kiel, Zu Passagierdampfern umgebaute M-Boote.jpg
Demilitarized M1940s in 1949

After the end of the war the surviving ships allocated to the United States, Britain and the Soviet Union. Many were assigned to the German Mine Sweeping Administration under British control to clear the coast of Northern Europe of mines. Several were later also given to France and Norway, and two to Italy.[7][8][9]

Eleven of the ships were returned to Germany in 1956/57 and were recommissioned into the Bundesmarine.

Fourteen M1940-type minesweepers (known as the Guadiaro class) were built for the Spanish Navy in Spanish shipyards. Seven of them were modernised with some help from the US Navy and served in the Spanish Navy for more than thirty years.

See also

  • R boat, for smaller German minesweepers
  • Sperrbrecher for another type of German World War 2 minesweeper

References

Notes
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  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
Bibliography
  • Conway's All The World's Fighting Ships 1922-1946
Online sources

Further reading

  • Lua error in package.lua at line 80: module 'strict' not found.
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