Cary Grant character Walter Christopher Eckland
Leslie Caron character Catherine Freneau
Trevor Howard character Commander Frank Houghton
Jack Good character Lieutenant Stebbings
Sharyl Locke character Jenny
Pip Sparke character Anne
Verina Greenlaw character Christine
Stephanie Berrington character Elizabeth Anderson
Jennifer Berrington character Harriet MacGregor
Laurelle Felsette character Angelique
Nicole Felsette character Dominique
Alex Finlayson character Doctor Bigrave
Peter Forster character Chaplain
Frank Marocco character Accordionist
John Napier character Lt. Cartwright
Simon Scott character Captain of Submarine, USS Sailfin
Don Spruance character Navigator
Ken Swofford character Helmsman, Submarine USS Sailfin
Richard Lupino character Radioman
