Shin kaitei gunkan

In 1932, the Japanese Army investigates a mysterious meteorite crash in Manchuria, and discovers a strange material that produces a previously unknown kind of energy. The mineral is later used during the Second World War to power a massive submersible battleship Ra, which is built to revitalize the war effort. Shortly before the launch, a young woman named Annette approaches the officers of the Ra and implores them not to use the battlesub. (imdb)