"Britain's Underwater Fighters- British Submarines Doing Some of the Toughest Jobs of a Tough War, Carry Out Long Miles of Patrol Duty in Search of Enemy Shipping, work With Other Ships of the Fleet in Fighting Formation, Or Penetrate Enemy Waters To Lay Mines. 4 and 5 February 1943, Algiers." P212 HMS SAHIB leaving harbour at Algiers to wage war against Axis shipping.