At All Costs: How a Crippled Ship and Two American Merchant Mariners Turned the Tide of World War II.
Story of Operation Pedestal and the men who saved the SS Ohio.
Sea Wolves - The extraordinary story of Britain’s WW2 submarines
I picked up Sea Wolves at the RN Submarine museum last year. After reading nearly every book written on submarines (except for sissy boats) I consider this among the best. It really personalizes the men who took them to sea.