I read with great interest the mention of the passing of Tristan Jones in “Letter From the Editor” (July/August). His account in Heart of Oak of the sinking of HMS Hood is truly memorable. I must note, however, that the Hood was a battle cruiser and the newer Bismarck was a battle ship . The difference between the two types lay in gun power, armor protection, and speed. Three British battle cruisers blew up and sank at Jutland in 1916. The Hood shared their fate twenty-five years later.