Served aboard HALIBUT 1964-1967. Had little clue of it's chief mission at the time of my service, so the book was revealing and insightful to me and to my family and friends who had been listening to my stories lo these many years. It was I who was overboard and reading a chapter about my own experience told by someone else, was chilling, and brought back memories of my own fears as well as the tenacity and expertise of the Captain and my shipmates, who refused to give up thier rescue efforts, until I was safely brought back aboard. I would recommend this book to other sub sailors and thier familys.