HMS Unity (N66)

U-class submarine

Service

Royal Navy as HMS Unity5 October 1938 — 29 April 1940240 days of the war

U-class submarine Particulars

Name: HMS Unity
Pennant / hull number: N66
Builder: Vickers Armstrong, Barrow-in-Furness
Laid down: 19 February 1937
Launched: 16 February 1938
Commissioned: 5 October 1938
Fate: Sunk 29 April 1940 in accidental collision
By collision (1940)
Status: Wreck

Specifications

Displacement, surfaced: 540 long tons (549 t)
Displacement, submerged: 730 long tons (742 t)
Length: 58.22 m (191 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: 27

HMS Unity was a U-class submarine, operated by the Royal Navy. She carried the pennant number N66. Her keel was laid at Vickers Armstrong, Barrow-in-Furness on 19 February 1937. She entered service on 5 October 1938, having been launched on 16 February 1938.

53 ships of the class were built.

The boat displaced 540 long tons surfaced and 730 long tons submerged. She measured 58.2 m (191 ft) long with a beam of 4.9 m (16 ft). Her designed speed was 11.2 knots, and she carried a complement of 27.

She was in commission for 240 days of the Second World War.

She was sunk on 29 April 1940 by collision, at 55°13′N 1°19′W. The wreck survives.

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

Armament and machinery

Propulsion: 2 shaft diesel-electric
2 Paxman Ricardo diesel generators + electric motors
615 hp / 825 hp
Armament: 4 bow internal 21 inch (533 mm) torpedo tubes, 2 external
10 torpedoes
3 anti-aircraft machine guns

Sister ships

28 more in the class

Sources

Facts harvested from HMS Unity (N66) on Wikipedia. Figures only — no wording is taken from it.
Photograph: Royal Navy official photographer — This photograph FL 9639 comes from the collections of the Imperial War Museums (collection no. 8308-29) — Public domain — Wikimedia Commons