Recognition Guide Warships of the Second World War
Kriegsmarine — Submarine

German submarine U-231

Type VIIC submarine

Displacement
757 long tons (769 t)
Length
67.1 m (220.1 ft)
Beam
6.2 m (20.3 ft)
Speed
17.7 knots (32.8 km/h, 20.4 mph)
Main gun
88 mm (3.5 in)

Service

  1. Kriegsmarine as U-23114 November 1942 — 13 January 1944425 days of the war
Type VIIC submarine Particulars
Name
U-231
Builder
Germaniawerft, Kiel
Ordered
7 December 1940
Laid down
30 January 1942
Launched
1 October 1942
Commissioned
14 November 1942
Fate
Sunk on 13 January 1944 (1944)
Status
Wreck

Specifications

Displacement, surfaced
757 long tons (769 t)
Displacement, submerged
857 long tons (871 t)
Length
67.1 m (220.1 ft) OA
Beam
6.2 m (20.3 ft)
Draught
4.74 m (15.6 ft)
Speed
17.7 knots (32.8 km/h, 20.4 mph)
Range
8,500 nmi (15,742 km)
Main gun
88 mm (3.5 in)

U-231 was a Type VIIC submarine built for the Kriegsmarine. Germaniawerft, Kiel laid her keel on 30 January 1942. She entered service on 14 November 1942, having been launched on 1 October 1942.

Her class ran to 612 ships. The class followed the Type UB III, Vetehinen class and was succeeded by the Type XXI (Late-war replacement).

The boat displaced 757 long tons surfaced and 857 long tons submerged. She measured 67.1 m (220 ft) long with a beam of 6.2 m (20 ft). Her designed speed was 17.7 knots.

Her main battery was one 88 mm (3.5 in) guns.

She was in commission for 425 days of the Second World War.

She was sunk on 13 January 1944. The wreck survives.

Written from the harvested record. Every figure above is sourced; the wording is this site's own.

Armament and machinery

Armament and machinery
Propulsion
  • 2 shafts
  • 2 × diesel engines
  • 2 × electric motors
Power
  • 2800 - 3200 PS (diesels)
  • 750 PS (electric)
Armament
  • 5 × 53.3 cm torpedo tubes (four bow, one stern)
  • 14 × torpedoes or 26 TMA mines
  • 1 × 8.8 cm deck gun(220 rounds)
  • 1 x 2 cm C/30 AA gun

Sister ships

587 more in the class

Sources