The Airship Blockade Runner Type Corvette Known Only as 343.
This captured naval blockade running strike bomber was somehow captured by pirates. No one knows how but they couldn't have asked for a meaner little corvette. Not mounting much for long range weapons the 343 typically is escorted by fighters as it charges through pickets. It wastes no "fuel efficiency" on sails instead relying on a relatively enormous prop to propel this heavily armored ship through enemy lines, and sometimes right through enemy sails using its lateral sail cutters to shred its enemies ability to give chase. 6ea 70 caliber cannons under the nose allow it to chew through most ships in its path or strafe a path of destruction on enemy fortifications. It has two dorsal flak cannons to ward off fighters and can carry an explosive bomb so powerful many in an alternate time line would think it is a mini nuke. While the only official name appears to be the 343, rumor in the pirate community is the crew often refer to it as the penetration.
Though fast it is not nimble and any strike is typically a single pass. No one knows why the 343 was taken though some suspect it is now used to run contraband knowing few forces are likely to spot this small sleek ship in time and no reasonably sized patrol can prevent its passing. The captain known for his vulgar signal flag messages fails to disappoint and may be making some reference to the unofficial name and function of this airship.
Lightning jack's Cutter Shiv Class Airship
Lightning Jack, once known however briefly as Jumpin jack is back and takes no S#$# from anyone. His previous crew of the Jako'lantern themed for pumpkin carvings and glowing pumpkins thrown at ships during boarding operations died in their sleep one night after a pumpkin light jack on fighter causing him to jump around before putting it out. The name jumpin jack stuck.. for the night.. until he set the entire ship on fire and took off in a captured autogyro to start over. Somehow he got a new crew (that shows 'em proper respect) and this incredibly fast Cutter class ship he uses it to make lighting raids on unsuspecting cargo haulers and cruise liners. His cutter has been upgraded with a launch rail for anti-ship Rockets that should be out of this cutter's class, a huge ballista like harpoon for snairing its prey, and a few deck guns to ward off fighters. Never take for granted the resourcefulness of those who aim to misbehave.
The prow has also been refitted with a sail shredder allowing the Jacks ship to scream in and quickly shred through a main sail while then latching on with a harpoon and suppressing the prey's crew with the deck guns. Jack is a nasty bit of work and rarely spends more than a few minutes on a captured ship before making his escape. an incredibly effective tactic that has allowed him to escape some impressive relief forces sent to rescue his hapless prey.
He too has a parting message in signal flags on the aft section of the ship. with the impressive array of sails and the trio of turboprops for propulsion, only fighters with long range have any chance of catching up if he has a head start.