King Bros. Production / MGM. Filmed in England. 79 minutes.
Joe Ryan: Bill Travers
Sam Slade: William Sylvester
Sean: Vincent Winter
McCartin: Christopher Rhodes
Professor Hendricks: Joseph O'Conor [not O'Connor as on the video box]
Professor Flaherty: Bruce Seton [not Seaton as according to the Magill Movie Guide]
Dorkin: Martin Benson
Radio Reporter: Maurice Kauffman
Admiral: Basil Digman
Mate: Barry Keegan
First Naval Officer: Thomas Duggan
First Colonel: Howard Lang
Bosun: Dervis Ward [not Word as according to the Magill Movie Guide]

Directed: Eugene Lourie (cf. The Giant Behemoth and The Beast from 20,000 Fathoms)
Produced: Wilfred Eades
Executive Producers: Frank King and Maurice King
Screenplay: John Loring and Daniel Hyatt
Special Effects: Tom Howard (two-time Academy Award winner in this field)
Cinematography: F.A. Young
Music: Angelo Lavagnino

Running Time: 1 hr 19 mins

Distributor: United Entertainment, Inc.

Country: United Kingdom