G'Quan class heavy cruisers were the backbone of the Narn Regime's naval forces up until their defeat by the Centauri Republic in 2259.
These are superior ships to the Earth Alliance Hyperion class heavy cruiser but inferior to the newer Omega class destroyers. When this vessels was first designed in 2244 there were rumors that despite its size this vessels was capable of atmospheric maneuvering which meant that the Narn had developed artificial gravity , but Centauri spies later confirmed that this was untrue and the Narn were no way near to developing artificial gravity. Many of these rumors were circulated by the Narn government itself in order to promote the belief that the Narn were more technologically advanced than they really were in order to frighten potential enemies.
- Source Babylon 5 Tehnical Manual