Jean Simmons (Emmeline Foster)
Susan Stranks (Emmeline, as a child)
Donald Houston (Michael Reynolds)
Noel Purcell (Paddy Button)
Peter Jones (Michael, as a child)
James Hayter (Dr. Murdoch)
Cyril Cusack (James Catter)
Gladys Boot
Philip Stainton (Mr. Ansty)
Patrick Barr (Second Mate)
Lynn Evans (Trotter)
Russell Waters (Craggs)
John Boxer (Nick Corbett)
Bill Raymond (Marsden)
Nora Nicholson (Mrs. Stannard)
Maurice Denham (Ship Captain)