- Country: UK
- Genres: Drama, History, War
- Release: 1950-05-18
- Director: Roy Ward Baker
- Writers: William Fairchild , Kenneth Woollard
- Language: English
- Stars: John Mills , Nigel Patrick , Peter Hammond , Andrew Crawford , Michael Brennan , George Cole , Victor Maddern , Roddy McMillan , Frank Coburn , Jack Stewart
- Runtime: 102 min
- Awards: Nominated for 1 BAFTA Award2 nominations total
- AKA: Morning Departure (United Kingdom) , Morning Departure , Iroes ton vython (Greece) , Plecare matinală (Romania) , Operation Disaster (United States of America) , Die Nacht begann am Morgen , Operation Disaster (Canada) , Операция «Катастрофа» , Die letzten Vier (Austria) , Рутинно плаване (Bulgaria) , Fanget i dybet (Denmark) , Trágico Amanhecer (Portugal, Portuguese Republic) , Lähtö aamunkoitteessa (Finland) , La nuit commence à l'aube (France, French Republic) , 曉の出航 (Japan) , Avgang ved soloppgang (Norway) , Salida al amanecer (Spain) , Ubåt saknas (Sweden) , Héroes del mar (Mexico) , Sukellusveneansa (Finland) , Héroes del mar (Chile) , Operaţiunea dezastru (Romania)
- Plot: The crew of a submarine is trapped on the sea floor when it sinks. How can they be rescued before they run out of air?
- IMDB:tt0042810
Operation Disaster Cast · · · ALL
Roy Ward Baker
Director
John Mills
Lt. Cmdr. Armstrong
Richard Attenborough
(1923–2014)
Stoker Snipe
Nigel Patrick
Lt. Manson
George Cole
ERA Marks
Bernard Lee
Cmdr. Gates
Peter Hammond
Sub-Lt. Oakley
Andrew Crawford
Sub-Lt. J. McFee
Michael Brennan
CPO Barlow
Wylie Watson
Helen Cherry
Lana Morris
Victor Maddern
Kenneth More
Zena Marshall
(1925–2009)
James Hayter
Roddy McMillan
Leading Seaman Andrews
Jack Stewart
Leading Seaman Kelly
George Thorpe
Capt. Fenton
Alastair Hunter
Capt. Jenner