92 mins | War | March 3, 1963
92 mins | War | March 3, 1963
| Producers | British Lion Films, Bertram Ostrer Productions |
| Original title | Mystery Submarine |
| Directors | C.M. Pennington-Richards |
| Writers | Bertram Ostrer, Hugh Woodhouse |
as Lt. Cmdr. Tarlton
as RAdm. Rainbird
as Lt. Seaton
as Cmdr. Scheffler
as Mike Fitzgerald
as Capt. Neymarck
as Lt. Haskins