Hell's Heart

Hell's Heart is a senne mobile siege station belonging to the pirate captain Alderik Hellgaze.
The vessel has a core twice the size of a superdreadnought, and three equidistant armored ‘arms’ extending outward like spokes of a wheel. Thrusters are built into rotating sections of the core on the ventral and dorsal surfaces, and the vessel’s surface is heavily armored and bristles with weapons, docking bays, and sensors.
Alderick and his Golden Star pirates hijacked the station around a decade ago, stealing it during its commissioning ceremony. They also captured all of the dignitaries present and ended up ransoming them back to their nations.