Operation Bikini (1963)

During WWII, Duke E. Gifford is second in command of the USS Thunderfish, a submarine which is firing off torpedoes that either explode too early or never explode at all. It's a dilemma that he'll eventually take up personally. Even more personal is his quest to win back his ex-wife, a nurse; but he'll have to win her back from a navy flier who also happens to be his commander's little brother.

The crew of the American destroyer escort, the USS Haynes, detects a German U-Boat—resulting in a prolonged, deadly battle of wits.

In the midst of World War II, the battle under the sea rages and the Nazis have the upper hand as the Allies are unable to crack their war codes. However, after a wrecked U-boat sends out an SOS signal, the Allies realise this is their chance to seize the 'enigma coding machine'.

At the height of Hitler's infamous U-boat war, the crew of the U.S.S. Swordfish were heading home after months at sea. They never made it. Now prisoners of war aboard U-boat 429, a small group of American survivors will find their loyalties put to the ultimate test when they're forced to join their German captors to fight for their very lives.

When Russia's first nuclear submarine malfunctions on its maiden voyage, the crew must race to save the ship and prevent a nuclear disaster.

At the start of World War II, Cmdr. Ericson is assigned to convoy escort HMS Compass Rose with inexperienced officers and men just out of training. The winter seas make life miserable enough, but the men must also harden themselves to rescuing survivors of U-Boat attacks, while seldom able to strike back. Traumatic events afloat and ashore create a warm bond between the skipper and his first officer.

A first-time captain leads a convoy of allied ships carrying thousands of soldiers across the treacherous waters of the "Black Pit" to the front lines of WWII. With no air cover protection for 5 days, the captain and his convoy must battle the surrounding enemy Nazi U-boats in order to give the allies a chance to win the war.

During World War II, a small group of survivors is stranded in a lifeboat together after the ship they were traveling on is destroyed by a German U-boat.

There were five Marines and one Navy Corpsman photographed raising the U.S. flag on Mt. Suribachi by Joe Rosenthal on February 23, 1945. This is the story of three of the six surviving servicemen - John 'Doc' Bradley, Pvt. Rene Gagnon and Pvt. Ira Hayes - who fought in the battle to take Iwo Jima from the Japanese.

Sent to rescue survivors from the site of a plane crash in the South Pacific during WWII, Captain Kelly and his elite squad of Australian commandos must keep tabs on a defecting Japanese official who could hold the secret to peace.