Trivia: When we first see Red in the cafe as he walks over to the table, if you look on the cafe wall there is a poster for a play, "I Have Been Here Before" at the Royalty Theatre starring Wilfrid Lawson. Lawson appears in Hell Drivers as Ed.
Trivia: The scenes on the Haynes were filmed on an actual Buckley Class destroyer escort, the USS Whitehurst (DE 634). A great number of the Whitehurst crew act in the movie as the crew of the Haynes, with the commanding officer Lieutenant Commander Walter R. Smith playing the chief engineer (though on IMDB this role is credited to Robert Boon).