Animated drawings demonstrate how specialized German submarines laid mines in the English Channel during World War I.
| Release Date | May 14, 1917 | |
|---|---|---|
| Status | Released | |
| Original Title | The Submarine Mine Layer | |
| Runtime | — | |
| Budget | — | |
| Revenue | — | |
| Language | — | |
| Original Language | English | |
| Production Countries | — | |
| Production Companies | ||