His lifelong love of sailing made him a capable naval officer, and he served with distinction in a series of small warships (corvettes and frigates), assigned to escort convoys and protect them from enemy attack.Based on his own wartime service, it concerned the young naval officer Keith Lockhart during a series of postings in corvettes and frigates.Monsarrat's short-story collections HMS Marlborough Will Enter Harbour (1949), and The Ship That Died of Shame (1959, made into a movie of the same name), had the same theme and gained popularity by association with The Cruel Sea.Portions of these novels were drafted during Monsarrat's time in Quebec, Canada, with the assistance of his typist and line editor Helen McDonald (née Lafleur).His book The Story of Esther Costello (1952), later made into a movie of the same name, while perceived as an uncomplimentary description of the life of Helen Keller and her teachers and assistants, is really an exposé of sleazy practices and exploitation of real causes in the fundraising racket, similar to criticisms of televangelism.[10] His final work, unfinished at the time of his death but published in its incomplete form, was a two-volume historical novel titled The Master Mariner.Based on the legend of the Wandering Jew, it told the story of a 16th-century English seaman who, as punishment for a terrible act of cowardice, is doomed to sail the world's seas until the end of time.