Galactic Battleship Oyashima

Galactic Battleship Oyashima (銀河戦艦大八島) is a Yamataian science fiction douga. The series aired on TV Akagi from October 6, 1974 to March 30, 1975, totalling up to 26 episodes.

The plot centres on an intergalactic war between Ordis and the alien Asha Collective. In the year 2140, humanity builds the most powerful space battleship thus far, naming it Oyashima after the actual Yamataian battleship Oyashima, in order to defend Ordis and defeat the Asha Collective. One of the main features of the series is the resemblance and naming of various Ordic space warships after real-world warships that served during the Second Escar-Varunan War and the Endwar, while Asha Collective spacecraft tended to be modelled after contemporary Arshavati warships and named after Yamatai Imperial Navy reporting names for the ships.

Galactic Battleship Oyashima is one of the most influential douga series in Yamatai and Chisei. Its turn toward serious themes and complex storylines influenced future works in the medium, including Kido Shatai, Freedom Fighter Karakamu, and After Impact.

Plot
In the year 2140, an alien race known as the Asha Collective attacks Ordis, which is now governed by the multinational Global Alliance. The Alliance space fleet barely defeats the Ashan force sent to destroy Ordis, and Ashan technology is captured and used to build a newest super-battleship, the Oyashima, in order to defend Ordis and later launch a counteroffensive against the Ashan Collective. All Global Alliance ships are named after warships from the Second Escar-Varunan War and the Endwar, and the Oyashima is named after the Yamataian battleship Oyashima, and carries its namesake's ship's bell as a symbol.

Crewed by an international crew, the Oyashima leads the Global Alliance Spacy and eventually attacks the Asha Collective's homeworld.