A generous author
Peter Gretton was there. He commanded Convoy HX231 but he barely mentions his work. He mainly talks about the heroism of the merchant seamen and their sacrifices. Many died. Some lost limbs. He pays tribute to the sailors and airmen from Britain, Canada, the United States, and Norway who defended the convoy, and acknowledges the bravery and humanity of the enemy. A German U-Boat captain ordered a merchant marine captain thrown overboard and he drowned, but that was an exception. It was more common for a U-Boat skipped to risk his boat to save lives.
Whether you are interested in submarines, destroyers, frigates, escort carriers, merchant ships, convoys, flying boats, the men and women who served in them (there were women on a few of the ship's in HX231), the training, the places they sailed from, the places they sailed to, and the places the aircraft flew from, this is a must have.