Japanese Super Submarine From World War II Finally Discovered

After more than half a century, a mystery of military history has finally been resolved. Researchers at the University of Hawaii and the National Oceanic and Atmospheric Administration (NOAA) have discovered a missing World War II-era Japanese mega-submarine under more than 2,300 feet of water off the southwest coast of Oahu. The submarine, an I-400, has been missing since 1946. It was the largest (400 feet) and most innovative of its day, capable of voyaging one and a half times around the worl...