This is the N4-721, a toxic waste disposal freighter, registered to the nefarious mega corporation : Ishioka. Defenseless, it relies on its very unstable core and hazardous cargo to prevent attacks, as anyone shooting at it would also be annihilated in the blast. It's been known to also use this mutually assured destruction tactic for piracy and illegal scavenging.
Made in LDD, rendered with 3dsmax and v-ray.
Inspired by a concept art from Jake Lunt Davies.