Cmdr. Casey Abbott (Captain, USS Starfish)

Nurse Lt. Helen Blair

Lt. Cmdr. Don Landon (XO, USS Starfish)

Freddy Warren

Lt. Paul Prentice

Carroll (as William Phillips)

Lt. (j.g.) Wes Barton

Bill aka Lt. Charlie

Chick (as Joseph Turkel)

Jug

Himself (in prologue) (uncredited)