Below

AKA:
Proteus (USA)

Written by:
Lucas Sussman
Darren Aronofsky

Directed by:
David Twohy

Made in:
USA in 2002

Actors:
Matthew Davis ... Odell (as Matt Davis)
Bruce Greenwood ... Brice
Olivia Williams ... Claire
Holt McCallany ... Loomis
Scott Foley ... Coors
Zach Galifianakis ... Weird Wally
Jason Flemyng ... Stumbo
Dexter Fletcher ... Kingsley
Nick Chinlund ... Chief
Andrew Howard ... Hoag
Christopher Fairbank ... Pappy
Chuck Ellsworth ... Navy Pilot
Crispin Layfield ... Navy Lookout
Jonathan Hartman ... Schillings
Sebastian Knapp ... Sonar #1

Plot:
In the dark silence of the sea during World War II, the submarine U.S.S. Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub's narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fear that lurk just below the surface of the ocean and deep inside the human psyche. IMDB

Review:
I'm not sure what it is about submarine movies, but they work. They always seem to do well, and this movie is no exception.

A good plot, good characters, creepy and scary, and even some humor thrown in, too.