- Country: USA
- Genres: Drama
- Release: 1939-12-17
- Director: Frank Lloyd (I) (1886–1960)
- Writers: Talbot Jennings (1894–1985) , Frank Cavett (1905–1973) , Richard Collins
- Language: English
- Stars: Douglas Fairbanks Jr. , Margaret Lockwood , Will Fyffe , George Bancroft , Montagu Love , Vaughan Glaser , David Torrence (1864–1951) , Lester Matthews (1900–1975) , Alec Craig , Barlowe Borland
- Runtime: 97 min
- Awards: N/A
- AKA: Κυρίαρχοι των θαλασσών (Greece) , Los amos del mar (Venezuela) , Les maîtres de la mer (Canada) , Herrscher der Meere , Rulers of the Sea , Merten valtiaat (Finland) , Les maîtres de la mer (Belgium) , Heerschers der zee (Netherlands the) , La conquista del Atlántico (Uruguay, Eastern Republic of) , Los señores del mar (Spain) , Havens herre (Sweden) , Kyriarhoi ton thalasson (Greece) , La conquista del Atlántico (Mexico) , A Conquista do Atlântico (Brazil) , Havets beherskere (Denmark) , Heersers der zee (Netherlands the) , Władcy morza (Poland) , Les maîtres de la mer (France, French Republic) , Senhores do Mar (Portugal, Portuguese Republic) , Aki leigázta a tengert (Hungary) , Il dominatore del mare (Italy) , Rulers of the Sea (United States of America)
- Plot: Story of the beginnings of the steam-powered engine and its use in the first steamship voyage across the Atlantic Ocean.
- IMDB:tt0031883
Rulers of the Sea Cast · · · ALL
Frank Lloyd
(I)
(1886–1960)
Director
Douglas Fairbanks Jr.
David 'Davie' Gillespie
Margaret Lockwood
Mary Shaw
Will Fyffe
John Shaw
George Bancroft
Capt. Oliver
Montagu Love
Malcolm Grant
Vaughan Glaser
Junius Smith
David Torrence
(1864–1951)
Donald Fenton
Lester Matthews
(1900–1975)
Lieut. Roberts
Alec Craig
Foreman
Barlowe Borland
Magistrate
Wilson Benge
Campbell
Harry Allen
Murdock
Barry Macollum
Miller
David Cavendish
First Officer Lewis
David Clyde
Second Mate Evans
Charles McAvoy
O'Brien
Alan Ladd
Colin Farrell
Lawrence Grant
Mr. Negley
John Power
Captain of 'Dog Star'
William Haade
A Stoker
Earl Askam
Chief Engineer (Uncredited)
Guy Bellis
Importer (Uncredited)
Lionel Belmore
Villager (Uncredited)
Frank Benson
Driver (Uncredited)
Wade Boteler
Mr. Brown (Uncredited)