Pease, Howard Heart of Danger: A Tale of Adventure on Land and Sea with Tod Moran, Third Mate of the Tramp Steamer “Araby.”

"Tod Moran and Rudy Behrens, a talented young violinist-composer, undertake a perilous journey through occupied France during World War II. They meet and work with the wonderful French Underground -- through Jacques, who teaches them to act boldly in 'the heart of danger,' and through many other Frenchmen who help them keep their appointment with the mysterious 'X-31' in Paris" -- Jacket blurb. Note that though most of this very somber novel is set on land in wartime France and Germany, the novel’s opening chapters do find Tod and the crew of the ARABY in an Allied convoy en route from Great Britain to the Mediterranean.