Terran Osaka

The Osaka-class destroyer boasts considerable firepower, and enhances the USC's ability to project power throughout the Solar System and beyond.

The Osaka is the USC's fleet battleship, and along with the ATF Tyr provides the platforms on which Earth mounts its heavy guns. It's generally considered one of the most overpowered and deadly M2s in the game, along with the Boreas. It is often preferred over the ATF Tyr as a general purpose warship as its cargobay is considerably more accommodating than that of its counterpart (and actually sufficient for maximum armament+shielding).