Recognition Guide Warships of the Second World War
Kriegsmarine — Submarine

German submarine U-821

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-82111 October 1943 — 10 June 1944243 days of the war
Type VIIC submarine Particulars
Name
U-821
Builder
Oderwerke, Stettin
Ordered
20 January 1941
Laid down
2 October 1941
Launched
26 June 1943
Commissioned
11 October 1943
Fate
Sunk by aircraft on 10 June 1944
By aircraft (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-821 was a Type VIIC submarine in service with the Kriegsmarine. Oderwerke, Stettin laid her keel on 2 October 1941. She entered service on 11 October 1943, having been launched on 26 June 1943.

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 243 days of the Second World War.

She was sunk on 10 June 1944 by aircraft, at 48°31′N 5°11′W. 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 × 3.7 cm Flak M42 AA gun
  • 2 × twin 2 cm C/30 anti-aircraft guns

Sister ships

587 more in the class

Sources