Playbook: Pirates! (PBtA)
So ye want t' be a jack tar¸ Laddie? Let me tell ye about life aboard a sailin' ship. It be hell. Ships may be out t' sea for months. The food be bad - dry bread full o' weevils and rancid salted pork better fit for makin' soap. Sanitation be worse. And disease! Yer teeth fall out and yer ears rot off. Do somethin' wrong? It's the cat o'nine tails for ye or even the keelhaul! And don't even think about piracy or ye'll be swingin' from the yardarm!"
A Dungeon World sourcebook for your pirate campaign. It contains rules for naval combat¸ black powder weapons and giant sea monsters.
It also contains the Sea Dog class playbook.
The PDF now also includes the "Ship's Crew" expansion.