Wehrmacht History 1935 to 1945


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Service Data

In Service: 1943 to 1 July 1974

Production Data

Builder: Abeking & Rasmussen, Lemwerder
Construction No: 3588
Laid down:
Launched: 17 February 1943
Commissioned: 1943

Technical Data

Type: 1936-42 Type R-boat/Räumboot
Class: R21 Class

Displacement: tons standard 135 tons full load
Length: 37.6 m
Beam: 5.82 m
Draft: 1.51 m
Propulsion: 2 × MWM 6 × cylinder 4 stroke diesel engines producing up to 1,800 ehp
Propellers: 2 × Voith-Schneider
Speed: 20 knots
Range: 900 nautical miles at 15 knots
Crew: 38 men and officers
6 × 2 cm MG L/65 C/30
carried 6000 rounds
Operators: Kriegsmarine

Other: R-boats


The R120 R-boat (Räumboot) was built in the 1940s by Abeking & Rasmussen shipyard located in Lemwerder, Germany as a minesweeper or escort vessel for the Kriegsmarine.

And which served in the 1. Räumbootsflottille and 4. Räumbootsflottille during World War II.

And after the capitulation of the Third Reich was employed in the German Mine Sweeping Administration (GMSA) and United States Labour Service Unit B (LSU-B) which were controlled by the allies.


The R-boat R120 is commissioned.

The R-boat R120 becomes operational with the 1. Räumbootsflottille.

The R-boat R120 becomes operational with the 4. Räumbootsflottille.

The R-boat R120 serves with the German Mine Sweeping Administration (GMSA).

1 December 1947
The R-boat R120 is seized as a prize of war by the USA.

29 June 1948
The R-boat R120 is transferred to the Münster waterways directorate as an accommodation vessel.

18 October 1949
The R-boat R120 is transferred to W Schnaas of Neuwied where the R120 was converted to the Rhine tug Dorothea.

15 September 1953
The Dorothea serves with the United States Labour Service Unit B (LSU-B) as the USN 139.

The USN 139 is renamed to Skorpion whilst serving with the German Federal Navy (Bundesmarine).

3 August 1962
The Skorpion is removed from active service and is used as the accommodation vessel WBRXVI.

1 July 1974
The WBRXVI is transferred to the naval fellowship at Borkum as the accommodation vessel Skorpion.



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German Warships, 1815-1945: Major Surface Vessels.
ISBN-10: 0851775330

German Warships, 1815-1945: U-boats and Mine Warfare Vessels.
ISBN-10: 155750301X

German warships of the Second World War.
ISBN-10: 0668040378

For a complete list of sources
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