Military Wiki
HMS Unseen (P51)
HMS Unseen.jpg
Class and type: U-class submarine
Name: HMS Unseen
Builder: Vickers Armstrong, Barrow-in-Furness
Laid down: 30 July 1941
Launched: 16 April 1942
Commissioned: 2 July 1942
Fate: scrapped September 1949
General characteristics

Surfaced - 540 tons standard, 630 tons full load

Submerged - 730 tons
Length: 58.22 m (191 ft)
Beam: 4.90 m (16 ft 1 in)
Draught: 4.62 m (15 ft 2 in)

2 shaft diesel-electric
2 Paxman Ricardo diesel generators + electric motors

615 / 825 hp

11.25 knots (20.8 km/h) max surfaced

10 knots (19 km/h) max submerged
Complement: 27-31

4 bow internal 21-inch (533 mm) torpedo tubes - 8 - 10 torpedoes

1 - 3-inch (76 mm) gun

HMS Unseen (P51) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness.


Unseen spent most of her wartime career in the Mediterranean, where she sank the Italian merchants Zenobia Martini, Le Tre Marie and Rastello (the former Greek Messaryas Nomikos), the Italian naval auxiliary Sportivo, the German auxiliary submarine chaser UJ-2205 (the former French Le Jacques Coeur), the Italian sailing vessel Fabiola, the German minelayer Brandenburg (the former French Kita), the German nightfighter direction vessel Kreta (the former French Ile de Beauté) and the German barge F 541. Unseen also destroyed the wreck of the German merchant Macedonia and a salvage barge. Unseen also launched unsuccessful attacks against the Italian merchant Saluzzo (the former French Tamara), and what is identified as an Italian Capitani Romani class cruiser.

Unseen survived the war and was scrapped at Hayle in September 1949.


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