The Neo Japan Flaghip is a ship in the series Mobile Fighter G Gundam.
This space ship appears with its Guard Warships in Episode 46 of Mobile Fighter G Gundam when Major Ulube Ishikawa is retrieving the Devil Gundam from Hong Kong. This is the flagship of the military of Neo Japan and Ulube's command ship. It can descent into Earth's atmosphere and leave on its own power.
When Ulube reactivates the Devil Gundam using Rain Mikamura, he kills everyone on board and begins his plan to rule the universe. He has the Flagship deposit the Devil Gundam on Neo Japan colony after declaring martial law and activated the shelters in Neo Japan.