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 ...

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 ...

In June 1943, a Kentucky congressman walked up to a microphone and gave Japan one of its greatest intelligence victories of WWII.

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.

HONOLULU — Two captured Japanese submarines scuttled by the Navy just after World War II have been found in the Pacific Ocean south of Pearl Harbor. The subs were found in February in 3,000 feet of ...

This video features rare World War II footage of a Japanese submarine crew operating at sea. Submarines played a significant role in Pacific naval strategy, carrying out reconnaissance missions, ...

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 site ...

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 ...

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 defence officials said ...