During World War II, Japan stunned the world with a top-secret innovation: the I-400-class submarine, the first and only ...

Japan's enormous I-400-class subs were supposed to bring the fight to US shores, launching planes to drop bombs on American cities and bases during during World War II. But wartime shortages limited ...

HONOLULU - Scientists plumbing the Pacific Ocean off the Hawaii coast have discovered a World War Two era Japanese submarine, a technological marvel that had been preparing to attack the Panama Canal ...

Until the 1960s, Japan's three I-400-class subs were the largest submarines ever built. They were so large, in fact, that they could each carry and launch three Aichi M6A Seiran amphibious aircraft.

CANBERRA (Reuters) - 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 ...

Piece by piece, the depths of the Pacific are giving up the story of World War II. Researchers from the University of Hawaii and National Oceanic and Atmospheric Administration announced last month ...

HONOLULU — A Japanese midget submarine sunk before the attack on Pearl Harbor has been found by researchers who stumbled across the vessel while doing training dives. Discovery of the 78-foot ...

Researchers in Hawaii have found a mammoth World War II-era Japanese submarine scuttled by the U.S. Navy in 1946 to keep its advanced technology out of the hands of the Soviet Union. The Hawaii ...

The wreckage of a U.S. submarine from World War II was found off the coast of Hokkaido in northern Japan — after disappearing almost 80 years ago. The USS Albacore, credited with sinking at least 10 ...

Just days before the 72nd anniversary of the attack on Pearl Harbor, there's a major find for shipwreck hunters -- a massive Japanese submarine, sunk off Hawaii's shores. It could have re-written the ...