Japan 's Musashi was once one of the worlds largest museums in the world . A expedition led by Microsoft co - founder Paul Allen makes discovery of the ship . Maritime museum director says he 's ` ` 100 % sure '' the ship was the Musashi .
Japan 's Musashi was once one of the two largest warships in the world . A team led by Microsoft co-founder Paul Allen makes discovery of the ship . Maritime museum director says he 's `` 90 % sure '' the ship was the Musashi .