This is Boba Fett's second ship, Slave II. The ship appeared in the Dark Empire comic, and it was what Fett used while Slave I was impound after Fett escaped the Sarlaac pit. The ship is a modified Mandal Motors Pursuer-class enforcement ship. You can get more info, and see the source material pics here:
To be honest, this is a ship that I always thought was pretty ugly. It's a strange-looking design with almost no symmetry. But there was a builder here on MOCpages a few years back that had done a very good job with the ship, and I knew that it wasn't a lost cause for trying to build a good-looking version. But this really came about for me to build because my son was asking if there had ever been a Slave II, what it looked like, etc. So of course I had to try my hand at the ship to see if I could bring in something that would do it justice. I feel like it came out very well.
If you look at the source materials for the ship, you'll see that the MOC is pretty faithful to what's out there as the official pics, but there is some stylized design, especially in the rear section of the ship.
Standard view of the ship. Best view for seeing the most overall detail.
Boba Fett standing by the ship with his custom-made LEGO blaster rifle. This is a cut of a musket, with a black technic pin added to the end,
The 'other' side of the ship. This side has the most stylized details to give it some interest. The torpedo launcher sits at the front on this side.
Back view, showing off the engines.
Sitting beside Slave I. This does a good job of showing the scale.
Top view. A good view to compare to the deckplans.