Rulers of the Sea is a 1939 American historical drama film directed by Frank Lloyd and starring Douglas Fairbanks Jr., Margaret Lockwood and Will Fyffe.

[2] The film's story is based on the voyage of the SS Savannah, the first steamship to cross the North Atlantic, from Britain to the United States.

(Others from this time include Spawn of the North (1938), Western Union (1940), and Hudson Bay Company (1940).

[5] Will Fyffe, British film star, was borrowed from Gainsborough Pictures in the US to play engineer John Shaw.

The film was made with the British audience in mind, so Paramount were worried on the declaration of war.