Allied Warships

HMS Adamant (F 64)

Submarine Depot Ship

NavyThe Royal Navy
TypeSubmarine Depot Ship
Class[No specific class] 
PennantF 64 
Built byHarland & Wolff Ltd. (Belfast, Northern Ireland) 
Laid down18 May 1939 
Launched30 Nov 1940 
Commissioned28 Feb 1942 
End service 

Displacement: 12500 tons.
Armament: 8 4.5" DP guns (4x2), 16 2pdr AA, 8 20mm AA, 8 .5" AA.
Speed: 17 knots Complement: 1273 men

Served with the Eastern Fleet during the Second World War.

Stricken in March 1966 and scrapped at Inverkeithing in September 1970.


Commands listed for HMS Adamant (F 64)

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1Capt. Robert Spencer Warne, RN10 Jan 194229 May 1942
2Cdr. (retired) Cecil Alexander Laffitte, RN29 May 194215 Jul 1942
3Capt. Robert Spencer Warne, RN15 Jul 194225 Feb 1943
4Cdr. (retired) Cecil Alexander Laffitte, RN25 Feb 19433 Apr 1943
5A/Capt. Robert Michael Gore Gambier, RN3 Apr 194329 May 1943
6A/Capt. (retired) Cecil Alexander Laffitte, RN29 May 19437 Dec 1943
7Capt. Hugh Meynell Cyril Ionides, RN7 Dec 194326 Jun 1945
8Capt. Benjamin Bryant, DSO, DSC, RN26 Jun 19454 Jun 1947

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Notable events involving Adamant include:

12 Mar 1942
HrMs O 23 (Lt.Cdr. A.M. Valkenburg, RNN) conducted attack exercises in the Clyde area. The target was HMS Adamant (Capt. R.S. Warne, RN) which was escorted by HMS Breda (Capt.(Retd.) A. E. Johnston, RN) and HMS Z 5 (T/A/Lt.Cdr. S.T. Wenlock, RNR).

Following these exercises more attack exercises were carried out during the night with HMS Z 5. (1)

9 Sep 1943
HMS Osiris was in Kilindini harbour when she collided with HMS Adamant (A/Capt.(Retd.) C.A. Laffitte, RN) and sustained some damage. The bow buoyancy and No.1 ballast were damaged but repairable without docking, gun mountings damaged beyond repairs, 9.5 inch periscope bent and unserviceable. Adamant's stern moorings were carried away. (2)


  1. File (Dutch Archives, The Hague, Netherlands)
  2. ADM 53/116827

ADM numbers indicate documents at the British National Archives at Kew, London.

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