Eldorado

The Eldorado-class is the Federation's final answer to the question "how much ore can one ship carry?" The hull is essentially a collection of cargo bays connected by structural members and fitted with engines. Zero weapon mounts because every cubic meter of weapons is a cubic meter of lost revenue. The Eldorado arrives at an asteroid belt and doesn't leave until the belt is empty. Federation logistics planners love it. Safety inspectors are less enthusiastic about the structural compromises required to fit that much cargo into a hull that other empires would allocate a fraction of that.