Allied Warships

HMIS Jumna (U 21)

Sloop of the Black Swan class

NavyThe Royal Indian Navy
ClassBlack Swan 
PennantU 21 
Built byWilliam Denny & Brothers (Dumbarton, Scotland) 
Ordered8 Sep 1939 
Laid down20 Feb 1940 
Launched16 Nov 1940 
Commissioned13 May 1941 
End service 


Commands listed for HMIS Jumna (U 21)

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1Cdr. Walter Richard Shewring, RINNov 194016 Apr 1942
2Cdr. Jesser Evelyn Napier Coope, RIN16 Apr 19421 Dec 1942
3A/Cdr. Ivan Bryan Warburton Heanly, RIN1 Dec 1942ear/mid44
4A/Cdr. Hugh Murray Clark, RINear/mid4428 Aug 1944
5A/Cdr. Killingworth Richard Utten Todd, RIN28 Aug 194416 May 1945
6A/Lt.Cdr. Jacques Frederick Bayliss, RIN16 May 194518 Jul 1945
7T/Cdr. Harold Aubrey Tod, RINR18 Jul 194521 Jan 1946

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Notable events involving Jumna include:

12 Feb 1944
The Japanese submarine RO-110 (offsite link) was depth charged and sunk east-south-east off Visakhapatnam, India by the Indian sloop HMIS Jumna (A/Cdr. I.B.W. Heanly, RIN) and the Australian minesweepers HMAS Launceston (T/A/Lt.Cdr. P.G. Collins, RANR(S)) and HMAS Ipswich (T/Lt. R.H. Creasey, RANR(S)).

RO-110 had attacked convoy JC-36 (Colombo-Calcutta) and torpedoed and damaged the British merchant Asphalon (6274 GRT).

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