The Deadly U-Boats Of WWI. The Imperial German Navy's U-boats were some of the deadliest vessels of the war, and they were responsible for sinking over 5,000 Allied ships.

The Japanese transported five midget submarines for the attack aboard I-type submarines.Deployed the night before the air attack from seven miles away, these craft made for the mouth of Pearl Harbor.

The wreck of a WWII Japanese submarine that was bombed with explosives 30 years later by an angry salvager is the subject of a virtual reality video.

A Sept. 22, 1943, aerial view of the Ellwood oil field showing the oil piers bombarded by the Japanese submarine I-17 on Feb. 23, 1942, and the route of the submarine (S).

The wreckage of a U.S. submarine found off the coast of northern Japan has been identified as the USS Albacore – a vessel believed by the Navy to have struck a mine and sunk during the heart of ...

The USS Albacore (SS-218) was lost at sea Nov. 7, 1944, after striking a mine. Last month, naval historians confirmed the World War II submarine's wreck site off the coast of Hokkaido, Japan. The ...

An Australian Navy minehunter has found the lost wreck of a suspected Japanese World War Two submarine off the South Pacific outpost of Rabaul, Australian defense officials said Friday. Oct. 28 ...

The majority of WWI submarines no longer exist, as many were sunk or sold for scrap. This isn't an unusual practice for the world's navies, but some boats remain and can be visited in museums.