Acheron-class Heavy Cruiser

The Acheron-class Heavy Cruiser was designed as a test bed for weapons based on the analysis of ancient - and possibly Xenos - weaponry uncovered in Sector 51. The project was evidently a success, producing a ship with a formidable array of long-ranged Weapons batteries and even longer-ranged Lances that would ultimately become the basis for the design of the Overlord-class Battlecruiser. No longer needing a test subject, only one Acheron was ever built.

Notable Acheron-class Heavy Cruisers

 * Chaos Eternus - Originally unnamed, the solitary Acheron turned to Chaos during the Gothic War. It would earn its name after repeatedly escaping Imperial forces under Admiral Grove during the Scharnhorst Conflict.