In 1953, renowned French scientist Professor Montel (Victor Francen) goes missing. The authorities believe that he and four other scientists defected behind the Iron Curtain.
The USS Tiger Shark is a U.S. Navy submarine on patrol in the Atlantic Ocean during World War II in August 1943. She receives orders to pick up survivors spotted adrift by a British PBY Catalina patrol plane. She retrieves three survivors – the British nurse Claire Paige (Olivia Williams) and two men, one of them wounded – from the British hospital ship Fort James, which had been sunk two days earlier; one of the survivors blames the sinking on a German U-boat that he briefly saw on the surface just before the Fort James suffered a torpedo hit. As they pick up the survivors, the crew of the Tiger Shark spots a German warship bearing down on them. The submarine has several encounters with the German warship and suffers damage from depth charges in the process. Later, the commanding officer of the Tiger Shark, Lieutenant Brice (Bruce Greenwood), discovers that the wounded survivor is actually a German prisoner-of-war, Bernard Schillings (Jonathan Hartman). Brice confronts him because he thinks Schillings has been making noises to betray the Tiger Shark 's position to the German warship. Brice shoots Schillings dead when the German panics and grabs a scalpel to defend himself.
The American submarine Grayfish, under Lieutenant Commander/Commander Barney Doyle (Glenn Ford), searches for the Shinaru, one of the Japanese aircraft carriers that led the attack on Pearl Harbor. Doyle receives word that the target has an escort, including a transport ship carrying his wife and child, who were captured in the Philippines.
During World War II, an American submarine, the Thunderfish, under the command of Cmdr. John T. "Pop" Perry (Ward Bond), takes on a group of children and nuns to transport them to Pearl Harbor. including a newborn infant nicknamed "Butch". The sub sights a Japanese aircraft carrier and attacks, but its torpedoes fail to explode. Pursued by the carrier, the sub manages to escape.
Quelque part dans les Caraïbes, Dominique Quesada (Gilbert Roland) part, accompagné d'un ami Johnny Gray (Richard Egan), de l'épouse de celui-ci Thérésa (Jane Russell), d'un prêtre le père Cannon (Robert Keith) et de Gloria (Lorie Nelson), à la recherche de l'épave d'un galion espagnol. Échoué par les fonds depuis trois siècles, le bateau contient un fabuleux butin. Les trois aventuriers vont rencontrer bien des obstacles dans leur périlleuse chasse au trésor...
The film begins with a tough Greek Lieutenant (J. Carrol Naish) announcing that the United States Marine Corps is seeking volunteers for a hazardous mission and special unit. Sergeant "Transport" Anderof (Sam Levene) meets the commander of the unit, Lieutenant Colonel Thorwald (Randolph Scott) who he has served with in the China Marines. Thorwald explains that he left the Corps to serve with the Chinese guerrillas fighting the Japanese during the Second Sino-Japanese War to learn their methods and has decided to form a unit using the qualities of Gung Ho or "work together".
During World War II, Navy Lt. Cmdr. John Lawrence (Richard Widmark), a strict disciplinarian, is put in charge of Underwater Demolition Team 4 after its former leader, Lt. Cmdr. Jack Cassidy, is killed in action. The unit's men are distrustful of the professionally aloof Lawrence, and the relationship immediately takes a turn for the worse when they brawl with sailors aboard their transport ship. The ship's captain, Lt. Cmdr. Pete Vincent (Gary Merrill), understands the natural resentment the elite UDT men feel over the death of Cassidy, which they have transferred to Lawrence, and offers to go easy on the team at captain's mast. The "by-the-book" Lawrence, however, elects to hold his own mast and disciplines the entire team just before a dangerous reconnaissance mission to ascertain the safest landing beach during an upcoming invasion of a Japanese-held island. Lawrence is scornfully perceived as afraid when he splits up the platoon and puts team executive officer Lt. Klinger in charge of a diversion to the more dangerous beach, where the main landing is scheduled.
Lieutenant Ted Jackson (Elvis Presley) is a former U.S. Navy frogman who divides his time between twin careers as a deep sea diver and nightclub singer. Ted discovers what he believes could be a fortune in Spanish gold aboard a sunken ship and sets out to rescue it with the help of go-go dancing yoga expert Jo Symington (Dodie Marshall) and friend Judd Whitman (Pat Harrington, Jr.). Gil Carey (Skip Ward), however, is also after the treasure and uses his girlfriend Dina Bishop (Pat Priest) to foil Ted's plans.
Gregory Mason and Andy Callahan are partners in a salvage business in Manila. Callahan is murdered after some drunken talk about sunken treasure; Mason is suspected by Lt Zuenon of the local police because he is in love with Callahan's wife, Stella.
Les plongeurs Brad et Tony arrivent en Jamaïque pour tenter de sauver la cargaison du Lady Luck, qui a coulé avec son équipage et un million de dollars en or. Ils affrètent un bateau, American Beauty, skippé par la très attrayante Terry McBride, mais ils ne peuvent trouver le navire...
One day in New Guinea, two men, "Jumbo" Johnson and seaplane pilot Nick Brandon, are discussing a possible gold heist. They have a drink with Katherine Shelley, an attractive widow who's obviously drinking away her sorrows.
Demi (Harris), is a veteran Soviet Navy captain finishing up a career that failed to live up to the legacy of his legendary father. He is given an assignment by Markov (Henriksen) to lead a top secret mission and given the command of his old ship. Due to mistakes he made during his service, involving the deaths of many of his past crew in a fire, this will be his last assignment and his only opportunity to command any ship at all. Demi interrupts a party involving his crew, including Alex Kozlov (Fichtner), his up-and-coming executive officer headed for great success. However, as Demi leaves his home to lead Alex and his crew of on the secret mission, the presence of KGB agent Bruni (Duchovny), and ominous portents, begin to alter the objectives of the mission, causing Demi and Kozlov to become concerned. Furthermore, Markov commits suicide as the submarine departs.
On a volcanic island near the kingdom of Hetvia rules Count Dakkar, a benevolent leader and scientist who has eliminated class distinction among the island's inhabitants. Dakkar, his daughter Sonia and her fiance, engineer Nicolai Roget have designed a submarine which Roget pilots on its initial voyage just before the island is overrun by Baron Falon, despotic ruler of Hetvia. Falon sets out after Roget in a second submarine and the two craft, diving to the ocean's floor, discover a strange land populated by dragons, giant squid and an eerie undiscovered humanoid race.
A small group of British sailors stationed on a Scottish island engaged in top-secret research on a new and dangerous torpedo are joined by a US Navy scientist, Lt. Brad Bradville (Gene Kelly), and his assistants. When several tests of the weapon fail, and men are killed, tensions within the group mount. Bradville must prove that the torpedo can work and win over the British, especially Lt. Rogert Wharton (John Justin), before the Admiralty pulls the plug on the project.