HMIS Jumna (U 21)
Sloop of the Black Swan class
|Navy||The Royal Indian Navy|
|Built by||William Denny & Brothers (Dumbarton, Scotland)|
|Ordered||8 Sep 1939|
|Laid down||20 Feb 1940|
|Launched||16 Nov 1940|
|Commissioned||13 May 1941|
Commands listed for HMIS Jumna (U 21)
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|1||Cdr. Walter Richard Shewring, RIN||Nov 1940||16 Apr 1942|
|2||Cdr. Jesser Evelyn Napier Coope, RIN||16 Apr 1942||1 Dec 1942|
|3||A/Cdr. Ivan Bryan Warburton Heanly, RIN||1 Dec 1942||ear/mid44|
|4||A/Cdr. Hugh Murray Clark, RIN||ear/mid44||28 Aug 1944|
|5||A/Cdr. Killingworth Richard Utten Todd, RIN||28 Aug 1944||16 May 1945|
|6||A/Lt.Cdr. Jacques Frederick Bayliss, RIN||16 May 1945||18 Jul 1945|
|7||T/Cdr. Harold Aubrey Tod, RINR||18 Jul 1945||21 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).