Summus Assembler Vats

From Halopedia, the Halo wiki

Summus Assembler Vats were Forerunner assembler vat facilities charged with the creation of ships, constructs, and mega-engineering tools. Most military shipyards and factory clusters were of this class.[1] Shortly before the Forerunner-Flood war, Summus was commissioned to build Sojourner-class dreadnoughts.[2]