We are not sure of the release date for Shinkaijû Reigô. It was released at the box office on 2008-05-10 so we estimate it was released to DVD in August 2008.
Director: Shinpei Hayashiya
Cast: Yukijiro Hotaru, Miyu Oriyama, Mao Urata, Isamu Ago, and Mickey Curtis
Set in World War II, the film depicts the story of the real-life Japanese battleship, the Yamato, which is confronted in the Pacific Ocean by giant monsters, including the most fearsome of them all, Reigo.