- Virginia Madsen
- Betty Stuart
- Alex Hyde-White
- Catesby Jones
- Reed Diamond
- Leslie Harmon
- Philip Casnoff
- Lt. Guilford
- E.G. Marshall
- Commdr. Smith
- Fritz Weaver
- John Ericsson
- Leon B. Stevens
- Capt. Franklin Buchanan
- Kevin O'Rourke
- Lt. Joe Smith Jr.
- Joanne Dorian
- Blossom
- Beatrice Bush
- Opal
- Conrad McLaren
- Gideon Welles, Secretary of the Navy
- Burt Edwards
- Edwin M. Stanton, Secretary of War
- James Getty
- Abraham Lincoln
- Phil Whiteway
- Cmdr. Davis
- Carl Jackson
- Cletus
- Marty Terry
- Mrs. Coyt
- Chris Northup
- Spencer Brown
- Joan DeMarrais
- Mrs. Fletcher
- Michal Sinnott
- Ella Mae
- Roy Lind
- Secretary Mallory
- Greg Baber
- Sgt. Collins
- Michael Stephen Costello
- Engineer Ramsey
- J. Michael Hunter
- Lt. Simms
- Michael Stanton Kennedy
- Pilot Patten
- Gayle Turner
- Quartermaster Williams
- Duke Lafoon
- Seaman Yates
- Andy Park
- Capt. John Worden
- George Kelly
- Lt. Samuel Green
- Ford Flannagan
- Ens. Keeler
- Mark Ransom Eis
- Seaman Stodder
- Joel Abel
- Capt. Van Brunt
- Tom Width
- Lt. Austin Pendergrast
- Ernie Dunn
- Ens. Stone
- Alejandro de Quesada
- Confederate / Union Sailor (uncredited)
- Roger Ragland
- Confederate Naval Gunner
- Gregory H. Starbuck
- Union sailor / Confederate sailor (uncredited)
