Deep Sea Detectives

Exploring the wreckage of the German U-boat U-166, in the Gulf of Mexico, where the vessel sank in 1942 and was discovered in 2001.

The wreckage of the Empress of Ireland, which sank in 1914 in the St. Lawrence River, is explored.

Exploring the wreckage of the USS Mississinewa, which was sunk near the Caroline Islands in 1944 by a Japanese torpedo manually guided on a suicide mission.

Exploring the wreckage of ships that sunk near the Island of Guam during two different wars. Included: the German vessel SMS Cormoran, which sank in 1917.

Examining the recovery of the Japanese fishing vessel Ehime Maru, which sank in 2001 off the coast of Hawaii after it collided with a U.S. Navy submarine, the USS Greenville.

The bow of the USS Murphy, which lies off the coast of New Jersey after sinking in 1943, is explored.

Exploring the wreckage of Duplex Drive Tanks that sank off the coast of Normandy during the D-Day invasion on June 6, 1944.

Exploring the wreckage of the Queen of Nassau, which sank in 1926 when it exploded while traveling from Miami to Tampa.

Exploring the Cueva Quebrada underwater cave system near the island of Cozumel, Mexico, to examine Mayan artifacts and a burial mound.

Exploring the World War II minesweeper YMS-304, which was sunk off the coast of Normandy a month after the D-Day invasion.

The wreckage of SS Jacob Luckenbach, an oil tanker that sank off the coast of California in 1953, is explored. In 2002, oil spills along the California coast were traced to the Luckenbach.

Exploring two locomotives discovered upright and intact on the ocean floor off New Jersey.

This episode explores a ferryboat that sank off the coast of Sicily in 1996.

It was the first submarine ever to sink an enemy ship, but after only one successful mission the H.L. Hunley vanished with its crew and lay hidden for more than a century. The circumstances surrounding the disappearance of the Confederacy’s secret weapon have remained an enduring mystery since the Civil War era, but now NGC has uncovered what may have brought it down.

Exploring the Japanese submarine “Shinohara,” which flooded in 1944 and remains at the bottom of Truk Lagoon in Micronesia.

Exploring the North Carolina, which sank in 1879 off the coast of Bermuda while heading to England.

Exploring the wreckage of the World War I U-boat UB-107 off the English coast.

Wreckage of the Thomas Hebert, a tugboat that sank off the coast of Virginia in 1993, is explored.

Wreckage of the USS San Diego, which sank in 1918 off the coast of Fire Island, N.Y., is explored.

Exploring the wreckage of the SS Marine Electric, which sank in 1983 off the coast of New Jersey.

The wreckage of the Vamar, which sank mysteriously in 1942 off Mexico Beach, is explored.