An enormous base (even by enormous base standards), the Federation's heavy starbase design is in a class all their own. Built to be gigantic cities in space replete with all of the necessary equipment to build, repair, and upgrade Starfleet vessels, the few starbases that exist in the Federation are major defensive linchpins.

Starbases are armed to the teeth with advanced weaponry systems and the heaviest shielding making them nearly invincible fortifications that cannot be destroyed by anything short of a full enemy assault.