On 31 March JW 58 met first patrol line and for 48 hours the U-boat force mounted 18 attacks on the convoy. No ships were hit but three U-boats were destroyed. U-355 was destroyed by and aircraft from Tracker.Kemp p. 180 On 2 April, destroyed U-360 with a hedgehog attack.Kemp p. 180 On 3 April a Swordfish from Activity attacked U-288 and with help from a Martlet and Avenger team from Tracker, destroyed her.Kemp pp. 180–181 On 3 April also JW 58 was joined by the eastern local escort, four Soviet destroyers, and on 4 April arrived at Kola without further incident.
