Recognition Guide Warships of the Second World War
Royal Navy — Submarine N82

HMS Umpire (N82)

British U-class submarine

Displacement
540 long tons (549 t)
Length
60 m (196.9 ft)
Beam
4.9 m (16.1 ft)
Speed
11.3 knots (20.8 km/h, 12.9 mph)
Complement
31
Main gun
76 mm (3 in)

Service

  1. Royal Navy10 July 1941 — 19 July 19419 days of the war
British U-class submarine Particulars
Name
HMS Umpire
Pennant / hull number
N82
Builder
Chatham Dockyard
Laid down
1 January 1940
Launched
30 December 1940
Commissioned
10 July 1941
Fate
Sunk in collision 19 July 1941
By collision (1941)
Status
Wreck

Specifications

Displacement, surfaced
540 long tons (549 t)
Displacement, submerged
730 long tons (742 t)
Length
60 m (196.9 ft)
Beam
4.9 m (16.1 ft)
Draught
4.62 m (15.2 ft)
Speed
11.3 knots (20.8 km/h, 12.9 mph)
Complement
31
Main gun
76 mm (3 in)

HMS Umpire was a British U-class submarine of the Royal Navy. She carried the pennant number N82. Chatham Dockyard laid her keel on 1 January 1940. Launched on 30 December 1940, she entered service on 10 July 1941.

She was one of 53 ships of her class.

The boat displaced 540 long tons surfaced and 730 long tons submerged. She measured 60 m (197 ft) long with a beam of 4.9 m (16 ft). Her designed speed was 11.2 knots, and she carried a complement of 31. Her main battery was of 76 mm (3.0 in) calibre.

She was in commission for 9 days of the Second World War.

She was sunk on 19 July 1941 by collision, at 53°09′N 1°06′E. 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 shaft diesel-electric
  • 2 Paxman Ricardo diesel generators + electric motors
  • 615 / 825 hp
Armament
  • 4 bow internal 21 inch (533 mm) torpedo tubes - 8 torpedoes
  • 1 - 3 in gun

Sister ships

28 more in the class

Sources

  • Facts harvested from HMS Umpire (N82) on Wikipedia. Figures only — no wording is taken from it.