Churchill issued instructions directly to Cossack after consulting Halifax, without going through Vian's superior, Admiral Forbes. A joint British-Norwegian guard and escort to Bergen remained an acceptable solution. If Norway would not undertake it, Vian was to board Altmark, release the prisoners, and take possession of the ship pending further instructions. Norwegian vessels were to be warned away, and British fire was permitted only against a serious attack, using no more force than necessary. Cossack prepared a boarding party of 45 sailors, largely drawn from Aurora because illness had reduced her own available crew.
Notable Point · 2:58:14-2:59:44
Churchill's boarding order limited force against Norway
Churchill ordered the prisoners' release if Norway would not accept a joint escort and guard, while restricting retaliation against Norwegian vessels.