The Mas7er-class supercarrier is the largest ship in the entire Mas7er Defense Force. It can carry other frigates, destroyers, or battleships as well as plenty of fighters. It is 7.7 kilometers long, and both 1.17km long and wide. The only ship of the class right now is the UNSC Mas7er itself.

The carrier can hold 343 Longsword interceptors, 259 Broadsword strike fighters, and several thousand Pelican dropships. It occasionally drops off Mas7er Marine or Army units.