The remains of a Japanese mini-submarine that participated in the Dec. 7, 1941, attack on Pearl Harbor have been discovered, researchers are to report today, offering strong evidence that the sub fired its torpedoes at Battleship Row.
That could settle a long-standing argument among historians.
Five mini-subs were to participate in the strike, but four were scuttled, destroyed or run aground without being a factor in the attack. The fate of the fifth has remained a mystery. But a variety of new evidence suggests that the fifth fired its two 800-pound torpedoes, most likely at the battleships West Virginia and Oklahoma, capsizing the latter....
One of the other midget subs was sunk by the [URL=http://en.wikipedia.org/wiki/USS_Ward_(DD-139)]]]USS Ward[/URL] a couple hrs. before the aerial attack. The destroyer's radio report was noted & dismissed by the authorities.
Japanese midget subs probably used the Type 97 torpedo, a smaller version of the deadly Type 93 "Long Lance," which the USN had no equivalent of.
And such torpedoes as the US did have were defective at the time. Mk 14 torpedo failures were one of the technological scandals of the War. The Bureau of Ordnance was culpable: [URL=http://www.bowfin.org/website/bowfin/bowfin_systems/torpedo_troubles/torpedo_troubles.htm]]]Torpedo Troubles[/URL]