Snakes on a Sub?! | Fer-de-Lance (1974)

Fer-de-Lance was a 1974 TV movie that deals with (so help me) SNAKES ON A SUB!

While the premise may seem goofy, it launches a solid disaster story, with the crew using their wits and courage to deal with poisonous snakes on the loose, a crewman out of his mind, and a submarine trapped on an undersea ridge.

(Oh, and I apologize for the slight echo on this video - getting used to a new setup)