Bruce Greenwood
Brice
Matthew Davis
Odell
Holt McCallany
Loomis
Olivia Williams
Claire
Jason Flemyng
Stumbo
Zach Galifianakis
Weird Wally
Scott Foley
Coors
Andrew Howard
Hoag
Nick Chinlund
Chief
Dexter Fletcher
Kingsley
Christopher Fairbank
Pappy
Matthew Leitch
Zap
Jonathan Hartman
Bernard Schillings
David Twohy
British Captain
Chuck Ellsworth
Navy Pilot
Crispin Layfield
Navy Lookout
Sebastian Knapp
Sonar #1
Max Casali
Air Manifold
Alexis Conran
Helmsman
Gary Broadway
Mess Steward
Tim Plester
Motormac
Craig Blake
Steward
Mitchell Barnett
Bow Planesman
David Crow
Sonar #2
Nick Hobbs
Captain Winters
Chris Bridgeman
Stern Planesman
Paul Bayfield
Radar Operator (uncredited)
Gary Bunn
Submariner (uncredited)
John Colton
Ensign Long (uncredited)
David Gries
Rescue Sailor (uncredited)
DJ Perry
Rescue Sailor (uncredited)