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The summer season is frantic for maritime authorities. As drug boats and small dinghies sail towards Spanish territory, small vessels wait to refuel them. (1 of.

When Air India Flight 182 disappeared from the radar, controllers were left baffled. Investigators later discovered a sinister reason for the deadly crash. 7+.

Discover the siege of Paris in 885, which was just part of the Viking's persistent and bloody attacks on Francia. (S1, ep 4) 7+.

Brothers in Arms: What happened aboard the USS Juneau would inspire the film "Saving Private Ryan". Five brothers were lost when the ship sank.

Since the dawn of time, humans have risked all to travel the seas. Now, new technologies have broken the barriers to extreme water travel. (S1, ep 2) 7+.

Tim and Fuzz take on their 100th car and their first electric conversion - a 1978 MGB. The car's previous owner's dying wish was for his car to be restored. (S10, ep 10) 7+.

Near the end of its one-hour flight, Continental Express Flight 2574 dropped from the sky, killing all on board. The cause? A simple maintenance error. 7+.

From the landings in Saipan to D-Day in Normandy, this dramatic unseen footage reveals World War II's most significant moments.

Investigate the mysterious sinking of Australia's 'Titanic', and join a ROV expedition on a search for clues at the bottom of the reef. (S4, ep 4) 7+.

Bjoern plans a high-risk rescue when an overturned tanker blocks the road. He needs Thord's help, but he's got to raise a boat that's sunk into the fjord. (S10, 8 of 8) 7+.

Tunnels are engineering marvels, cutting through the landscape and creating direct routes - until they cave in. Plus, a bridge suddenly collapses in Miami. (S1, ep 5) 7+.

A tragedy from the Vietnam War, when more than 250 children, who were being airlifted to safety on a US Air Force C5A Galaxy, died in a mysterious explosion. 7+.

It's June 1941, and Hitler is busy invading the USSR. He's eager to conquer this 'living space'. (1 of 2) 7+.

In October 1941, Hitler thinks his victory over the USSR is imminent, but his madness leads to an apocalypse on the Eastern front. (2 of 2) 7+.

The untold story of the tactics, heroes and villains of Operation Drumbeat, the German U-boats' devastating and surprise attack on the US Eastern coast in 1941. 7+.

Air traffic controllers hear an explosion when an Air Algérie flight lifts off. Moments later, the Boeing 737-200 crashes in the Sahara. (3 of 10) 7+.