When leaving Colombo on 9 October: Indian minesweeper HMIS Carnatic (J 199) (T/Lt J.U. Webb, RINVR) and as local escort the Indian armed trawler HMIS Baroda (T 249) (Lt S.D. Kala, RIN) until 10 October
Joined as reinforcement on 13 October: British destroyer HMS Relentless (H 85) (LtCdr R.A. Fell, RN)

* U-boats that fired torpedo or used the deck gun

On 9 Oct, 1943, the convoy MB-50 left Colombo consisting of nine merchant ships in four columns, escorted by a minesweeper and an armed trawler. At 16.30 hours on 11 October, the Jalabala in station #11 was torpedoed and sunk by U-532 about 12 miles west-southwest of Tellicherry, India. HMIS Carnatic was the only escort and dropped depth charges in a counter attack, but soon rejoined the convoy without picking up the survivors in anticipation of another attack. On 13 October, the convoy was joined by HMS Relentless and one merchant ship that had missed the departure and arrived at its destination Bombay the next day.