The ships massed about one million tons. They had minimal cargo capacity and were built with military-grade inertial compensators and impellers. The electronic warfare systems were equivalent to those of a Homer-class battlecruiser and had received Phase One and Two upgrades including drones, though without stealth capability.
Atlas-class vessels were sufficiently armed with missiles and anti-missile systems and crewed to deal with most pirates, as most of the crew was comprised of former Royal Manticoran Navy personnel. These features made it possible for them to be mistaken as battlecruisers. (HH6)