 Complete the following phrase:  Jamaica rejoined the Home Fleet at the beginning of 1943 and received six twin power-operated AA guns as well as four single guns some time during the year. During November she protected the convoys RA 53B, JW 54A, JW 54B and RA 54B, but was not engaged. On 15 December she was assigned to Force 2, the distant escort for Convoy JW 55A, with the battleship and four destroyers. Force 2 was commanded by Admiral Bruce Fraser, Commander-in-Chief of Home Fleet, in Duke of York. For the first time the British distant cover force escorted the convoy all the way to the Kola Inlet. Their passage was uneventful, and Force 2 sailed on 18 December to refuel at Iceland. Before he reached his destination, Admiral Fraser received Ultra information that a sortie by the was likely to attack 