another modification to the venerable Chargh class of war tugs, this vessel was modified by a more prominent house to carry a single gargantuan siege disruptor. There are few stations or planetary fortification that can withstand the power of its main weapon. Though firing the weapon is risky as it takes up almost 95% of the ships power output. Leaving barely enough to operate life support and requiring the shields and engines to be run on emergency power for the duration of the firing sequence.
This vessel is my take on the Jach which appears in StarTrek: Discovery (https://www.ex-astris-scientia.org/schematics/dis-jach-top.jpg)
Jach firing her main weapon