The Atomic Submarine 1959 ★★ Sci-Fi (CC)

The Atomic Submarine is a 1959 independent, American black-and-white science-fiction film directed by Spencer Gordon Bennet and starring Arthur Franz, Dick Foran, Brett Halsey, Joi Lansing and Jean Moorhead, with John Hilliard as the voice of the alien.

Storyline:
The Atomic Submarine concerns an alien invasion that begins when an underwater UFO (or USO – Unidentified Submerged Object) attacks the world's shipping for unknown reasons. The film showcases the then-new technology of nuclear submarines, and follows the crew and scientists aboard the atomic-powered USS Tigershark, which has been ordered to hunt down the mysterious underwater saucer and stop its disruption of sea commerce.

Credits
Arthur Franz as Lieutenant Commander Richard 'Reef' Holloway
Dick Foran as Commander Dan Wendover
Brett Halsey as Dr. Carl Neilson
Paul Dubov as Lieutenant David Milburn
Bob Steele as CPO 'Grif' Griffin
Victor Varconi as Dr. Clifford Kent
Joi Lansing as Julie
Selmer Jackson as Admiral Terhune
Jack Mulhall as Secretary of Defense Justin Murdock
Jean Moorhead as Helen Milburn
Richard Tyler as Seaman Don Carney
Sid Melton as Yeoman Chester Tuttle
Kenneth Becker as Seaman Al Powell
Frank Watkins as Watkins
Tom Conway as Sir Ian Hunt
John Hilliard as Voice of Spaceman
Pat Michaels as Narrator