INS Khukri is the only ship the Indian Navy has lost in its history of Combat. It was the first warship sunk in action by a submarine after World War 2.
lt was sunk by a Pakistani Submarine PNS Hangor on 9th December 1971 off the coast of Diu (Gujarat). Khukri was hit by 3 torpedoes.
Its commander Captain Mahender could have saved his life first by abandoning it. But he refused to abandon and gave away his safety gear to a junior officer and rescued 61 sailors.
In the process, he himself went down with the sinking ship. As many as 176 sailors and 18 officers also went down with the KHUKRI. Captain Mahender Nath Mulla was posthumously awarded the *Maha Veer Chakra.