Jock Mahoney
Commander Harold 'Alan' Roberts
Acting
Shirley Patterson
Margaret 'Maggie' Hathaway
Acting
William Reynolds
Lt. Jack Carmen
Acting
Henry Brandon
Dr. Carl Hunter
Acting
Douglas Kennedy
Capt. Burnham
Acting
Phil Harvey
Machinist's Mate Steve Miller
Acting
Kenner G. Kemp
Officer at Briefing / Officer on Ship (uncredited)
Acting
Bing Russell
Radio Operator (uncredited)
Acting
Bert Stevens
Officer at Briefing (uncredited)
Acting
Tom Coleman
Man at Briefing (uncredited)
Acting