Allied Warships

HMAS Wallaroo (J 222)

Minesweeper of the Bathurst class

NavyThe Royal Australian Navy
PennantJ 222 
Built byPoole & Steel Pty. Ltd. (Sydney, New South Wales, Australia) 
Ordered24 Sep 1940 
Laid down24 Apr 1941 
Launched18 Feb 1942 
Commissioned15 Jul 1942 
Lost11 Jun 1943 

Sunk in the Indian Ocean about 60 nautical miles west off Fremantle, Australia in a collision with the U.S. Liberty ship Gilbert Costin.
Four hours after the collision HMAS Wallaroo (T/Lt. Eric Sinclair Ross, RANR(S)) sank while trying to reach Fremantle.
3 of her crew were lost with the ship.


Commands listed for HMAS Wallaroo (J 222)

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and that we only list Commanding Officers for the duration of the Second World War.

1T/Lt. Eric Sinclair Ross, RANR(S)3 Jul 194211 Jun 1943

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Notable events involving Wallaroo include:

20 Mar 1943

Convoy OW 3.

This convoy departed Fremantle on 20 March 1943.

It was made up of the following merchant vessels;
Harrison Gray Otis (American, 7176 GRT, built 1943), Lowlander (British, 8059 GRT, built 1925), Montanan (American, 6415 GRT, built 1917), Winslow Homer (American, 7176 GRT, built 1942) and Zane Grey (American, 7176 GRT, built 1943).

On departure from Fremantle, around 0830I/20, the convoy was escorted by the light cruiser HMAS Adelaide (A/Capt. J.C.D. Esdaile, OBE, RAN), destroyer HrMs Van Galen (Lt.Cdr. F.T. Burghard, RNethN) and the minesweepers HMAS Dubbo (T/Lt. N.G. Weber, RANR(S)) and Wallaroo (T/Lt. Eric Sinclair Ross, RANR(S)).

Around 0700H/21, HMAS Dubbo and HMAS Wallaroo were detached to return to Fremantle.

Around 1750GH/21, HrMs Van Galen was detached to return to Fremantle.

Around 1320FG/25, the convoy was turned over by HMAS Adelaide to the armed merchant cruiser HMS Worcestershire (A/Capt.(Retd.) E.H. Hopkinson, RN). HMAS Adelaide then set course to return to Fremantle.

The convoy arrived at Colombo on 2 April 1943. (1)


  1. ADM 53/118751 + ADM 53/118752 + Report of proceedings of HMAS Adelaide for March 1943

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

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