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Japanese subs found off Hawaii could have changed World War II

The two Japanese submarines – which were commandeered and scuttled by the US after World War II – were much larger, faster, and stealthier than US subs of the day. One included a float-plane that could attack New York.

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Marine researchers have found a pair of Imperial Japanese Navy submarines on the sea floor off Hawaii's Oahu Island – vessels so advanced for their day they would provide plenty of fodder for a fresh novel by Tom Clancy.

Known by their vessel numbers, the I-14 was a 375-foot submarine aircraft carrier – its crew capable of assembling and launching two float-plane bombers in roughly 20 minutes. The other craft, the I-201, was an attack submarine, twice as fast as any in the US fleet and faster than subs in any other Navy during World War II.

"This is one of the most significant marine-heritage findings in recent years," according to Hans Van Tilburg, a marine archaeologist who is the maritime-heritage coordinator for the National Oceanic and Atmospheric Administration's National Marine Sanctuaries in the Pacific. The find was announced Thursday.

"These submarines are 60-year-old time capsules offering first-hand insight into a military technology that was far ahead of its time," he says. The subs were so advanced, Mr. Van Tilburg continues, that had they appeared earlier in the war and in larger numbers, "the submarines had the potential to turn the tide of war."

Among the approaches Japanese designers used: a rubbery coating on the outside of the hull and conning tower to absorb radar and reduce the likelihood that sonar aboard US destroyers or subs would pick up sounds from inside the Japanese vessels.


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