All Cast

Jock Mahoney
Commander Harold 'Alan' Roberts

Shirley Patterson
Margaret 'Maggie' Hathaway

William Reynolds
Lt. Jack Carmen

Henry Brandon
Dr. Carl Hunter

Douglas Kennedy
Capt. Burnham

Phil Harvey
Machinist's Mate Steve Miller

Kenner G. Kemp
Officer at Briefing / Officer on Ship (uncredited)

Bing Russell
Radio Operator (uncredited)
