HMIS Jumna (U21) was a Black Swan-class sloop, which served in the Royal Indian Navy (RIN) during World War II.

The citation in the London Gazette said that he had carried out repairs to guns during dive-bombing and machine-gun attacks, and had shown great devotion to duty.

Leading Seaman Khan Mohammed, who displayed skill and initiative in engaging the Japanese with an Oerlikon gun was also awarded the Distinguished Service Medal.

LeCocq, R.I.N.V.R., was decorated with the Distinguished Service Cross and six of the Jumna's ratings were mentioned in Despatches, having shown "devotion to duty during heavy and continuous dive-bombing attacks".

After embarking troops, she joined Task Force 64 headed by HMS Phoebe for support of landing by 3rd British Commando Brigade between Akyab and Ramree with the destroyer HMAS Napier and HMIS Narbada.