I tried the ship too.
It's range is incredible, and the rockets absolutely destroy shields and kill fighters flying about in the barrage zone.
However, the missiles are totally inaccurate and cannot kill off capital ships. Case in point, barely 1/10th of the missiles directly hit the space station in my case, the rest simply exploding in the vicinity.
The missiles don't really do a lot of hull damage either, which I'm happy with. It's just an artillery ship, not something you hide behind the front lines until everything dies off from barrages.