***A total of 2,200 German sailors were lost, while just 111 were rescued.***
When the British navy stopped to pick up survivors it was reported a periscope had been seen. Believing it may have been German the British left the scene and the Germans in the water died of cold.
So are the rules of war.
Good alibi. I understand there was a seething anger at the Bismark for sinking the Hood. I read where one British seaman climbed down the cargo net to rescue a Bismark survivor who had his arms blown off. They tried to court-martial the Brit with "desertion of station while under fire", but cooler heads prevailed and it was later dropped.