Recognition Guide Warships of the Second World War
Royal Navy — Submarine P51

HMS Unseen (P51)

U-class submarine

HMS Unseen (P51)
Allen, E E (Lt) Royal Navy official photographer — This photograph A 21500 comes from the collections of the Imperial War Museums (collection no. 4700-01) — Public domain — Wikimedia Commons Plate — P51 British U class submarine HM SUBMARINE UNSEEN made fast to a buoy on arrival at the submarine base at Portsmouth .

Service

  1. Royal Navy as HMS Unseen2 July 1942 — September 19491,158 days of the war
U-class submarine Particulars
Name
HMS Unseen
Pennant / hull number
P51
Builder
Vickers-Armstrongs, Barrow-in-Furness
Laid down
30 July 1941
Launched
16 April 1942
Commissioned
2 July 1942
Fate
Scrapped September 1949 (1949)
Status
Scrapped

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
Main gun
76 mm (3 in)

HMS Unseen was a U-class submarine of the Royal Navy. She carried the pennant number P51. Her keel was laid at Vickers-Armstrongs, Barrow-in-Furness on 30 July 1941. Launched on 16 April 1942, she entered service on 2 July 1942.

She was one of 53 ships of her class.

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. Her main battery was of 76 mm (3.0 in) calibre.

She was in commission for 1,158 days of the Second World War.

She was broken up for scrap in September 1949.

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 - 10 torpedoes
  • 1 - 3 in gun

Sister ships

28 more in the class

Sources

  • Facts harvested from HMS Unseen (P51) on Wikipedia. Figures only — no wording is taken from it.
  • Photograph: Allen, E E (Lt) Royal Navy official photographer — This photograph A 21500 comes from the collections of the Imperial War Museums (collection no. 4700-01) — Public domain — Wikimedia Commons