An Admiralty film depicting the functionality and uses of the submarine including an underwater attack on an "Hun" convoy and a surface attack on an U-boat.
| Release Date | January 2, 1943 | |
|---|---|---|
| Status | Released | |
| Original Title | Submarine Patrol | |
| Runtime | 10min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | Crown Film Unit | |