Large Patrol Submarine

Updated 23rd December 2017

 

Type:
Triton Class



Pennant No.:
18.T
18.N
N.18

Laid Down:
19th March 1937
Vickers-Armstrong, Barrow-in-Furness.

Commissioned:
2nd May 1939
Lt.Cdr. J.W. McCoy.

Commander:
Feb. 1938 - Feb. 1940
Lt.Cdr. J.W. McCoy.
Feb. - Apr. 1940
Lt. J.S. Stevens DSO* DSC.
Apr. - Aug. 1940
Lt. E. Bruce.
Aug. 1940 - Nov. 1941
Lt.Cdr. W.J.W. Woods.
Nov. 1941 - Jan. 1942
Lt. J.S. Huddart.

Complement:
56 Peacetime.
62 Wartime.
5 Officers and 51 Ratings Peacetime
6 Officers and 56 Ratings Wartime.

Service Career:
1939
5th Flotilla, Trials & Work Up.
Sept. 1939
2nd Flotilla, HMS Forth, Dundee.
Nov. 1939
2nd Flotilla, HMS Forth, Rosyth.
1940
2nd Flotilla, HMS Forth, Rosyth.
1941
1st Flotilla, HMS Medway, Alexandria.

Fate:
Completed twenty 'War Patrols', lost on her twentyfirst patrol.

Struck by a drifting mine Northeast of Helgoland on 26th December 1939. Unable to dive she returned to Rosyth receiving air cover from Coastal Command. On surveying the damage it was discovered that 18 feet of the bows had been blown away including two thirds of the bow external tubes. The internal tubes had been blown back six inches and bow caps shattered, fortunately although the tubes were loaded none of the torpedoes exploded.

April 1941: Operation Colossus, recovering paratroops who had been dropped to demolish an aqueduct.

27th June 1941: Sank the Italian submarine Salpa.

26th August 1941: Whilst carrying out an operation to land commandos to blow up a viaduct near Palermo she sighted a battleship and two cruisers. Because of extra personnel, stores and folboats she was only carrying two torpedoes both of which were fired resulting in a hit on the cruiser Bolzano. Although damaged the Bolzano was able to make Messina.

Lost 1st January 1942 - Possibly mined off Hydra.