INS "Jamuna" was instrumental in locating the wreckage of , a British Type 14 ("Blackwood"-class) frigate of the Indian Navy, which was the first warship sunk in action by a submarine since World War II. The ship sunk off the coast of Diu, Gujarat, India by the Pakistan Navy Daphné-class submarine on 9 December 1971 during the Indo-Pakistani War. Furthermore, it also remains the post-Independence era Indian Navy's only warship to be lost in war to date.