The support ships that escort the Flagship vessels of the Enlightened Fleets fill some very specialist roles. The Plinius Support Carrier carries dozens of Scythe Drones and can launch them from hydraulic ramps. This allows the Plinius to partially submerge when the ramps are closed making it very difficult to see and target. Built around the same hull as the Plinius are a number of other Cruisers. The Quintilian bombardment cruiser mounts heavy rockets that it can launch at distant targets before returning below the waves. The Tacitus Assault Cruiser favours two hardpoints for turrets, most often Particle Beamers. The Claudius Merchantman is designed with extra hull space and is the backbone of Enlightened logistics, the ingenious engineers still managing to squeeze in a number of torpedo launchers to protect them from pirates and other hostiles.

While these Cruisers are able to lurk just below the surface the Diogenese and Praxilla Class Submarines are able to operate at significant depths. These large Automata operate under a number of pre-programmed subroutines and are effective at hunting down and destroying enemy vessels.