"They Fought a German Convoy. 21 April 1943, Felixstowe. One Small Supply Ship Was Sunk and Another Probably Destroyed in One of the Longest and Most Persistent Attacks An Enemy Convoy Ever Launched by British Light Coastal Forces. the Attack Led by Lieut Ian C Trelawney, Rnvr, Took Place Off the Dutch Coast on the Night of 19 April 1943. It Lasted 2 and 1/2 Hours." Lieut Ian C Trelawney, RNVR (centre) who led the attack of our Light Coastal Forces, with two of the commanding officers, Sub Lieut J H Saunders, RNVR(left) and Lieut Norman S Gardner, RNVR.