An AIAT/i.
The Slave IV assisted Fett on his many escapades through the galaxy. For instance: He used the ship to track down a Devaronian named Kardue'sai'Malloc on Peppel who was wanted on Devaron for his crimes.
For reasons unknown, Fett abandoned the starship on the planet Shogun in 21 ABY following the death of his friend Fenn Shysa. It was later rediscovered by Ailyn Vel, Boba's daughter, while searching for her father who she believed to be dead. She then used it to track down Bornan Thul in response to a bounty placed on him by Nolaa Tarkona.
The disputed Firespray-31-class craft.
On the Young Jedi Knights: Shards of Alderaan cover, a Firespray-31-class patrol and attack craft was portrayed, leading some to believe that the Slave IV was a Firespray-31 itself.
- "The History of the Mandalorians" — Star Wars Insider 80
- The Complete Star Wars Encyclopedia