a helicopter deck. There are similar ships in the New UN fleet, called Silurian-class, which do not have the camouflage paint used on the Gotland. Narushio: A diesel-electric submarine, formerly of the Japan Maritime Self-Defense Force. Freedom: A crewed space station orbiting Earth. Originally a private venture, it was intended to search for coal deposits. After the Hammer of Eden it was used to map the new surface of the Earth, as well as underwater terrain and new ocean currents. Episodes Songs Opening Theme: "BLUE TREASURE" Performed by: Minami Kuribayashi Ending Theme: 'VOICE" Performed by: Tatsuhisa Suzuki References External links Action anime and manga Anime with original screenplays Bandai Entertainment anime titles Science fiction anime and manga Submarines in fiction TMS Entertainment Bandai Visual