 More codebreaking material was captured later that day when "Offa" and "Chiddingfold" boarded and sunk the armed trawler "Donner" while sinking the cargo ship .On 1 January 1942, "Onslow" rescued 23 survivors from the British merchant ship , torpedoed the previous day by the German submarine .In early March 1942, "Onslow" sailed with the main body Home Fleet as part of the distant escort to the Arctic Convoys QP 8 and PQ 12.