Wehrmacht History 1935 to 1945


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Service Data

In Service: 1944 to 3 October 1970

Production Data

Builder: Abeking & Rasmussen, Lemwerder
Construction No: 3768
Laid down:
Launched: 10 August 1944
Commissioned: 1944

Technical Data

Type: 1937-43 Type R-boat/Räumboot
Class: R25 Class

Displacement: 150 tons standard 155 tons full load
Length: 41.05 m
Beam: 5.8 m
Draft: 1.67 m
Propulsion: 2 × MWM 6 × cylinder 4 stroke diesel engines producing up to 2,155 ehp
Propellers: 2 × Voith-Schneider
Speed: 19.8 knots
Range: 900 nautical miles at 15 knots
Crew: 41 men and officers
1 × 3.7 cm L/83 SK C/30 later
carried 1000 rounds
2 × 2 cm MG L/65 C/30
carried 2000 rounds
10 mines
Operators: Kriegsmarine

Other: R-boats


The R146 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 8. Räumbootsflottille during World War II.

And after the surrender of Germany was employed in the German Mine Sweeping Administration (GMSA), German Mine Sweeping Formation Cuxhaven (MRVC) and United States Labour Service Unit B (LSU-B) which were controlled by the allies.


The R-boat R146 is commissioned.

The R-boat R146 becomes operational with the 8. Räumbootsflottille.

The R-boat R146 serves with the German Mine Sweeping Administration (GMSA).

1 November 1947
The R-boat R146 is seized as a prize of war by the USA.

1 January 1948
The R-boat R146 serves with the German Mine Sweeping Formation Cuxhaven (MRVC).

1 July 1951
The R-boat R146 serves with the United States Labour Service Unit B (LSU-B) as the USN 146.

31 July 1956
The USN 146 is renamed to Jupiter whilst serving with the German Federal Navy (Bundesmarine).

20 February 1959
The Jupiter is used as the training boat OT 1.

17 November 1969
The OT 1 is transferred to the naval fellowship at Neuss.

3 October 1970
The OT 1 is used as the accommodation vessel Pulchra Nussia.



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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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