The "cu
The "cursed pirate" specialisation could be founded in some kind of passive skills or buffs/debufs that transform your pirate into a Bootstrap Bill or something alike.
A holy
A holy book and two smoking barrels.
A parro
A parrot, maybe a monkey... A f*cking kraken perhaps?
Sea turtles my friend.
I guess a pirate may be something hybrid between mele and range, some shooting & sword/knife fighting.
Someone
Someone else said something about the "Viking pirate" being a tank & i find it a good idea altough it may be difficult to distinguish it from warriors.