Captain Horatio Hornblower R.N.

James Kenney

Midshipman Longley

James Robertson Justice

Seaman Quist

Denis O'Dea

RAdm. Sir Rodney Leighton

Richard Hearne

Polwheal (Hornblower's Batman)

Michael Dolan

Surgeon Gundarson

Stanley Baker

Mr. Harrison (Bosun)

Alan Tilvern

Hernandez

Alec Mango

El Supremo (Don Julian Alvarado)

Christopher Lee

Spanish Captain