Practically ALL of them.
Blackbeard used two of them to capture the Queen Anne's Revenge and was killed in a battle between his sloop (Revenge) and 2 under Robert Maynard.
The sloop was by far the most common ship used by pirates and most used one at some point in their career. Many preferred sloops to much larger craft, as sloops were faster, more maneuverable, and has a smaller draft. Also, many merchantmen only carried a few small cannon, so as not to interfere with cargo capacity and limited manpower. So, a well-armed and manned sloop could outman and even outgun a much larger merchantman.
Sloops ranged in size from 40 to 70-ish feet, with most 50-60 feet (I think). Their firepower ranged from 6-12 cannon, which were called "guns" or "big guns" on the sea, with 4 or 6 pounders as normal for sloops. 10 guns is a typical arrangement.
What you have on your hand is THE classic pirate boat.
I am interested in making one like that myself. Which kit are you using?
-- Edit: It is an ILLUSTRATION . . . I thought you were making a physical 3-D model . . . I stand corrected.
Oh, at the time, a ship was only a large 3-master. Sloops were considered boats, not ships.