M 66 (ship, 1917)

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M 66 p1
Ship data
flag German EmpireThe German Imperium German Empire German Empire German Empire German Empire Germany United States
German EmpireGerman Empire 
Nazi stateNazi state 
German Reich NSGerman Reich (Nazi era) 
Germany 1946Germany 1945 to 1949 
United States 48United States 
other ship names

M 566

Ship type Minesweeper
class Minesweeper 1916
Shipyard Joh. C. Tecklenborg in Geestemünde
Build number 291
Launch June 2, 1917
Commissioning July 1, 1917
Whereabouts Canceled in 1950
Ship dimensions and crew
59.30 m ( Lüa )
width 7.30 m
Draft Max. 2.20 m
displacement 506  t
crew 41-52
Machine system
machine 2 × triple expansion steam engines
1,750 hp (1,287 kW)
16 kn (30 km / h)
propeller 2

2 × 8.8 cm L / 30 guns

Armament from 1937

2 × 10.5 cm L / 45 guns

M 66 was a minesweeper of the type minesweeper 1916 of the German Imperial Navy and the Reichsmarine , which served from 1937 in the Kriegsmarine as a test boat Störtebeker , then as a minesweeper M 566 , and which finallydroveat the end of his career in the German mine clearance service .

Construction and technical data

The boat was in 1916 at the shipyard Joh. C. Tecklenborg in Geestemünde with the hull number 291 on down Kiel , went there on 2 June 1917 as a minesweeper M 66 from the stack and was put into service on July 1, 1917. The boat was 59.30 m long and 7.30 m wide, had a draft of 2.20 m and displaced 506 t (standard) and 535 t (maximum). The armament consisted of two 10.5 cm L / 45 guns. In the Second World War also several 2-cm were Flak added. Up to 30 mines could be carried. Two triple expansion steam engines with a total of 1750 hp enabled a top speed of 16.0 knots . The bunker supply of 130 tons of coal yielded a range of 2,000 nautical miles at 14 knots cruising speed. The crew consisted of 40 men.


The boat was used in the mine search and security service in the First World War . After the end of the war it was taken over by the Reichsmarine. The Navy had the boat rebuilt in 1937, and from October 1, 1937, it was used as a so-called test boat for the test association of the communications test command (NVK) to test radio, radio measurement and fire control technology. On October 12, 1937, it was named Störtebeker . On October 1, 1940, like all boats in its class , it was given a new number and now operated as the M 566 .

After the sinking of the M 538 on June 21, 1944 during a Soviet air raid in Reval , the M 566 took over the function of the command and escort ship for the 1st clearing boat flotilla . With this it took part in the last months of the war in the evacuation of refugees and soldiers from the Kurland basin and the former German eastern regions (" Company Hannibal ").

At the end of the war, the boat was American spoils of war, but was then assigned to the German mine clearance service with the entire 1st clearing boat flotilla on July 27, 1945 . There it served until November 30, 1947 as a guide and escort ship of the flotilla, which cleared mines in the western Baltic Sea with its home port Kiel . On December 1, 1947, the boat was finally handed over to the Office of Military Government for Germany (US) (OMGUS) as US property . The OMGUS chartered it on June 18, 1948 to the "Ostdeutsche Dampfschiffs- und Transport Gesellschaft (DSTG)" in Hamburg. The boat returned to OMGUS on September 12, 1949 and was scrapped in 1950.


  1. Over the years, the NVK Versuchsverband included the test boats and ships Welle (ex Grille ), Strahl , Störtebeker , Freiherr von Stein , Wullenwever , Andros , Strom , Laboe , Klaus Groth and Siegfried ( Oliver Krauss: Armor and armor testing in the German Marine history with special consideration of the Torpedoversuchsanstalt (TVA). Dissertation, Christian-Albrechts-Universität Kiel, Kiel, 2006; p. 166 )
  2. http://www.wlb-stuttgart.de/seekrieg/minen/mrdiv1-frames.htm

Web links


  • Siegfried Breyer: Minesweeper 1935 - Development and Use , Marine-Arsenal Volume 47, Podzun-Pallas, 2000, ISBN 3-7909-0712-X
  • Heinz Ciupa: The German warships 1939-1945 . VPM, ISBN 3-8118-1409-5