A German submarine hunts allied ships during the Second World War, but it soon becomes the hunted. The crew tries to survive below the surface, while stretching both the boat and themselves to their limits.

Told in flashback, Out of the Depths strives to explain why its four male protagonists are bobbing around the Pacific in a lifeboat. The story proper begins as Captain Faversham (Jim Bannon) and his crew embark upon a secret mission which takes them into Japanese waters. The plan is to prevent a kamikaze attack against the American invading forces. Compelling in itself, the plotline isn't improved by arbitrary doses of misfire pathos and comedy relief. One of the sailors is played by Ken Curtis, later to gain TV fame as Festus on Gunsmoke.

Two skippers and their military ships are participating in big maneuvers.

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

After the Cold War, a breakaway Russian republic with nuclear warheads becomes a possible worldwide threat. U.S. submarine Capt. Frank Ramsey signs on a relatively green but highly recommended Lt. Cmdr. Ron Hunter to the USS Alabama, which may be the only ship able to stop a possible Armageddon. When Ramsey insists that the Alabama must act aggressively, Hunter, fearing they will start rather than stop a disaster, leads a potential mutiny to stop him.

During a routine patrol, a reporter is given permission to interview a hardened cold-war warrior and captain of the American destroyer USS Bedford. The reporter gets more than he bargained for when the Bedford discovers a Soviet sub and the captain begins a relentless pursuit, pushing his crew to breaking point.

True story of Lt.Cdr. Howard W.Gilmore who was awarded the Medal of Honor for sacrificing himself to save his submarine, February 1943.

Showcases 3 major events during World War 2 involving both the Europeans & Pacific conflicts. The Raids to destroy Nazi Germany's heavy water production based in Norway, plus the final desperate act to deny them what had already been stockpiled. The Japanese midget submarines role and participation in the attack on Pearl Harbor, December 7, 1941. What they achieved plus what was their ultimate fate. The attacks on United States warships in the Pacific late in World War 2 by the Japanese Kamikaze and Okha Squadrons. The Kamikaze attacks were in whatever planes the Japanese forces were able to gather. The Okha attacks were made in specially built flying bombs that were towed by larger and usually slower aircraft that were not suitable for fighter work.

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.

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.

The captain of a submarine sunk by the Japanese during WWII is finally given a chance to skipper another sub after a year of working a desk job. His singleminded determination for revenge against the destroyer that sunk his previous vessel puts his new crew in unneccessary danger.

A German living in India during World War II is blackmailed by the English to impersonate an SS officer on board a cargo ship leaving Japan for Germany carrying a large supply of rubber for tyres. His mission is to disable the scuttling charges so the captain cannot sink the ship if they are stopped by English warships.