Gone to Sea in a Bucket by a David Black

 A World War II submarine adventure seen through the eyes of an up-and-coming Scottish reserve officer. Very interesting look at the British navy, its traditions, its language and pretensions. Chapters of description and character building, with chapters of mayhem and fear, mimics the rhythm of wartime naval life. "Bucket" is an uncomfortable boat manned by men used to discomfort. The first of five books, it is very good and quite different from other sub books. Similar to Run Silent Run Deep but based more on a single character and less self-confident about the naval equipment provided, including the boat.