[4][5] At the time, thirteen of her crew were East Pakistanis who planned an operation to take over the submarine and defect to Bangladesh from France.

: Contents [7]: 66–67 [8] After the incident, Mangro sailed to Pakistan under the command of Lieutenant-Commander Shamim Khalid and reported to its base in Karachi.

[9] On 22 November 1971, Mangro was deployed under the command of Lieutenant-Commander Shamim to patrol off the Arabian Sea, and eventually detected the Indian Navy's armada that was sent to attack Karachi.

[9] On 2 December 1971, Mangro reported back to her base, only to witness the attack on Karachi, by the squadron she had tracked earlier, commence.

[10]: contents  During the war, Mangro continued her operations and reported back to base safely after the ceasefire between the two nations was reached.