 The fire from the destroyers was ineffective until Amphion closed to a range of 7 @,@ 000 yards ( 6 @,@ 400 m ) and began hitting the German ship at about 11 : 15 . By noon , Königin Luise was sinking and the three British ships rescued 5 officers and 70 ratings . The flotilla proceeded onwards with their patrol until they reached the Dutch coast around 21 : 00 and turned for home . Fox was uncertain as to the locations of the mines laid by Königin Luise and laid a course that was seven nautical miles ( 13 km ; 8 @.@ 1 mi ) west of where he thought the mines were . He guessed wrongly and led his flotilla over the danger area . 
