Planetary bombardment on the cheap! A very interesting idea which will show up in my new Traveller game.
It's interesting because most pirates in the past have preyed on settlements rather than on ships, for the most part. And this ship keeps with that tradition.
I will have to convert it for my upcoming campaign (contact me if you're from State College PA), because piracy will be a large theme of the campaign. Having a ship like this in orbit will definitely tilt the odds towards the pirates, and give the heroes something to think about (like, can they destroy the ship before it gets another shot off).