Documentary set to air on massive WWII Japanese sub scuttled off - Hawaii News Now - KGMB and KHNL

Documentary set to air on massive WWII Japanese sub scuttled off the coast of Oahu

HONOLULU (HawaiiNewsNow) - For more than 60 years, its whereabouts were a mystery. After World War II the United States Navy scuttled a 400-foot Japanese submarine known as the I-400 to keep its advanced technology a secret from the Soviet Union.

For the first time people can get an up close look at the mega-sub. The Japanese Broadcasting Corporation shot a 73-minute documentary on the I-400.

Terry Kirby is the chief pilot of the Hawaii Undersea Research lab. He's spent well over three decades searching for lost history off the coast of Oahu.

For Kirby each find is unique. But the discovery of a World War II Japanese mega sub back in 2013 was one of the most memorable.

"We had no idea where the I-400 could be," said Kirby.

Kirby got the chance to study the relic again this past November when NHK funded a single day dive to film a documentary.

This time, 12 miles south of Barber's Point beneath 2000 feet of water, Kirby and his fellow researchers found key pieces of what remains of the battleship. Remarkably it was all intact.

"What we found down there was the whole conning tower laying on its side. We found the hanger door laying on the bottom. We found the front part of the hanger," said Kirby.

James Delgado is the directory of Maritime Heritage and was also along for the ride the day of the discovery.

"History comes to life down there when you see them. Something historic like this is a reminder that not everything has been found," said Delgado.

The Hawaii undersea research lab will keep monitoring this site. There are no plans as of yet to bring anything to the surface.

The documentary will air May 6th in Japan. We're still waiting to learn when the release date will be here in Hawaii.

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