M1940 series minesweeper in 1941 | |
Class overview | |
---|---|
Name | M class |
Operators | |
Subclasses |
|
Built | 1937–1945 (not including older M1915 and M1916 ships) |
Completed |
|
Lost |
|
General characteristics : M1935 [1] | |
Displacement |
|
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 |
|
General characteristics : M1940 [2] | |
Displacement |
|
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 |
|
General characteristics : M1943 [3] | |
Displacement |
|
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 |
|
The M class were the standard minesweeper (German : Minensuchboot) of Nazi Germany's Kriegsmarine during World War II. The vessels were the primary force in Germany's harbor defense command and were organized administratively into minesweeper flotillas.
A total of 36 old units from World War I served in World War II. Some of these were converted to experimental ships, artillery school ships, fleet tenders or R-boat tenders, and 1 (ex-M109) was converted into a survey ship. In 1940, most of these converted vessels were re-designated as minesweepers again.
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]
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]
The M1940 ships had a standard displacement of 543 tons and a full load displacement of 775 tons. They measured 62.3 meters in length, with a beam of 8.5 meters and a draught of 2.3 meters. Armament consisted of one 105 mm guns plus one 37 mm and six to eight 20 mm anti-aircraft guns. They were powered by two coal-fired boilers driving a two-shaft triple-expansion engine, which generated an output of 2,400 hp resulting in a top speed of 17 knots and a range 1,043 nautical miles at that speed.
Four vessels of this type were launched for the Romanian Navy in 1943 as the Democrația class. They were built locally from German materials. These were structurally identical with the German boats but with a different armament. [6]
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:
Only 18 vessels were completed by the time the war ended. [7]
After the end of the war the surviving ships were 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. [8] [9] [10]
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.
The Finnish Navy is one of the branches of the Finnish Defence Forces. The navy employs 2,300 people and about 4,300 conscripts are trained each year. Finnish Navy vessels are given the ship prefix "FNS", short for "Finnish Navy ship", but this is not used in Finnish-language contexts. The Finnish Navy also includes coastal forces and coastal artillery.
The V and W class was an amalgam of six similar classes of destroyer built for the Royal Navy under the 9th, 10th, 13th and 14th of fourteen War Emergency Programmes during the First World War and generally treated as one class. For their time they were among the most powerful and advanced ships of their type in the world, and set the trend for future British designs.
The Romanian Naval Forces is the principal naval branch of the Romanian Armed Forces and operates in the Black Sea and on the Danube. It traces its history back to 1860.
The Algerine-class minesweeper was a large group of minesweepers built for the Royal Navy (RN) and the Royal Canadian Navy (RCN) during the Second World War. 110 ships of the class were launched between 1942 and 1944.
The Baltic Sea campaigns were conducted by Axis and Allied naval forces in the Baltic Sea, the Gulf of Bothnia, the Gulf of Finland and the connected lakes Ladoga and Onega on the Eastern Front of World War II. After early fighting between Polish and German forces, the main combatants were the Kriegsmarine and the Soviet Navy, with Finland supporting the Germans until 1944 and the Soviets thereafter. The Swedish Navy and merchant fleet played important roles, and the British Royal Navy planned Operation Catherine for control of the Baltic Sea and its exit choke point into the North Sea.
HMCS Alberni was a Flower-class corvette that served in the Royal Canadian Navy (RCN) during the Second World War. The Flower-class corvettes were warships designed for anti-submarine warfare. The ship was constructed by Yarrows Ltd. in Esquimalt, British Columbia, laid down on 19 April 1940, launched on 22 August and commissioned on 4 February 1941. The corvette sailed east to join the RCN's fleet in the Atlantic via the Panama Canal, where upon arrival, the vessel began escorting trans-atlantic convoys in the Battle of the Atlantic. Alberni took part in the key convoy battle of Convoy SC 42. In 1942, the corvette was transferred to Allied convoy assignments associated with Operation Torch in the Mediterranean Sea. In 1944, Alberni was among the Canadian naval vessels assigned to Operation Neptune, the naval component of the invasion of Normandy and escorted support ships to and from the United Kingdom on D-day.
The Azalea class of twelve minesweeping sloops were built under the Emergency War Programme for the Royal Navy in World War I as part of the larger Flower class, which were also referred to as the Cabbage class, or "Herbaceous Borders". The third batch of twelve ships to be ordered in May 1915, they differed from the preceding Acacia class only in mounting a heavier armament. One ship, converted to a Q-ship was lost during the war, another during the Allied intervention in the Russian Civil War in 1919. With the exception of two others, the rest were scrapped. One entered mercantile service, while the other was transferred to the Belgian Navy. Both were captured by the Germans during World War II and put into German service. One was lost with the final ship being scrapped in 1952
Coastal Forces was a division of the Royal Navy initially established during World War I, and then again in World War II under the command of Rear-Admiral, Coastal Forces. It remained active until the last minesweepers to wear the "HM Coastal Forces" cap tally were taken out of reserve in 1968. The division received more gallantry awards than any other branch of the Royal Navy during that period.
Steam gun boats (SGBs) were small Royal Navy vessels built from 1940 to 1942 for Coastal Forces during World War II. The class consisted of nine steam-powered torpedo boats.
The R boats were a group of small naval vessels built as minesweepers for the Kriegsmarine before and during the Second World War. They were used for several purposes during the war, and were also used post-war by the German Mine Sweeping Administration for clearing naval mines.
Riilahti was a Ruotsinsalmi class minelayer of the Finnish Navy. Riilahti was commissioned in 1940 and sunk in 1943. The vessel was named after the battle of Riilahti, which was fought between Sweden and Russia in 1714.
HMS Guysborough was a VTE-engined Bangor-class minesweeper of the Royal Navy. Before commissioning she was transferred to the Royal Canadian Navy on loan. She saw action in the Battle of the Atlantic and the Invasion of Normandy. She was torpedoed by the German submarine U-868 in 1945 while returning to the United Kingdom.
HMCS Clayoquot was a Bangor-class minesweeper that served with the Royal Canadian Navy during the Second World War. She saw action mainly in the Battle of the Atlantic. She was sunk in 1944. The minesweeper was named after Clayoquot Sound on Vancouver Island, British Columbia.
The Albona class were mine warfare ships used by the Italian Regia Marina and Royal Yugoslav Navy. Fourteen ships were originally laid down between 1917 and 1918 for the Austro-Hungarian Navy as the MT.130 class. However, the end of World War I and the dissolution of Austria-Hungary left them incomplete until 1920, when three ships were finished for the Regia Marina. These ships were armed with two 76 mm (3 in) guns. An additional five ships were completed for the KM in 1931 as the Malinska or Marjan class, and were armed with a single 66 mm (2.6 in). All of the completed ships could carry 24 to 39 naval mines. The remaining ships were never completed.
The Galeb class, also known as the Orao class, were minelayers originally built as minesweepers for the Imperial German Navy between 1918 and 1919.
HMCS Grandmère was a Bangor-class minesweeper constructed for the Royal Canadian Navy during the Second World War. Entering service in 1941, the minesweeper took part in the Battle of the Atlantic and the Battle of the St. Lawrence before being taken out of service in 1945. The ship was sold for mercantile service following the war, first as the yacht Elda and then the cargo ship Jacks Bay. The ship was sold for scrap in 1968.
The Schichau class consisted of 22 torpedo boats built for the Austro-Hungarian Navy between 1885 and 1891. The class was one of the first torpedo boat classes built for the Austro-Hungarian Navy, and they were initially powered by steam from a single locomotive boiler and were armed with two 37 mm (1.5 in) Hotchkiss guns and two 356 mm (14 in) torpedo tubes. The entire class was reconstructed between 1900 and 1910, when they received two Yarrow boilers and a second funnel.
Surface flotillas of the Kriegsmarine were organizational groupings of German naval vessels during World War II based on class of vessel and geographical location. Surface flotillas were not operationally deployed units, but functioned through the administrative command chain of the Kriegsmarine.
The Romanian Danube Flotilla is the oldest extant naval force on the Danube, dating since 1860, when the Romanian Navy was founded. It saw service during most of the wars involving Romania, and was the most powerful river naval force in the world during the Interwar period.