Mine for Keeps The Silent Service : Season 2 Episode 11

Trigger (SS-237) For her third war patrol, the USS Trigger had an unusual assignment: mine the coastal waters of Japan to drive enemy shipping into deep water. No one was happy with the assignment. For Ensign Thomas, mine-laying was a lowly chore. When the patrol takes an unusual turn, Thomas and the Trigger's crew find that even mine laying pays off.