- HD 1080
- Runtime: 92m.
- Status: Released
0
- Languages: en
- Country: United Kingdom
- Director: C.M. Pennington-Richards
- Stars: Edward Judd, James Robertson Justice, Laurence Payne, Joachim Fuchsberger, Arthur O'Sullivan
- keywords: submarine
- Production_studio: Bertram Ostrer Productions, British Lion Films
- Slogan: The Deadliest Undersea Battle Ever Filmed!
- The Mystery Submarine is featured in the top rankings of 1963
- #16 in Top War Movies of 1963
A British convoy is trying to elude a group of German U-Boats.