Here is a list of the main cast members:
* Richard Widmark as Lieutenant Commander Michael 'Mike' O'Hara
* Mitzi Gaynor as Julie Bennett
* Dean Jagger as Captain George 'Doc' Benson
* John Lund as Lieutenant (jg) Ed 'Eddie' Hamilton
* Viveca Lindfors as Ingrid Holm
* Robert Arthur as Lieutenant (jg) 'Mac' MacDonald
* William Demarest as Chief Petty Officer 'Red' O'Malley
* Harry Morgan as Chief Petty Officer 'Spike'
This cast was led by the notable Hollywood stars Richard Widmark and Mitzi Gaynor, and featured supporting roles from well-known actors like Dean Jagger, John Lund, and Viveca Lindfors. The film also featured appearances by familiar character actors like Robert Arthur, William Demarest, and Harry Morgan.