I'm currently running the Savage Tide adventure path, which includes the players getting their hands on a pirate ship which becomes their home for most of the AP. While I still have a few levels until they actually get their ship, I'm trying to prepare for the eventual ship combats that will follow - and I am extremely confused.
It looks like there are two completely different sets of ship combat rules available for Pathfinder - one in the Game Mastery Guide, and one in Ultimate Combat. The big issue for me is that the statistics - including the potential combat capability of the ships - is extremely different depending on which system we're using.
For reference, the PC's ship will be using the Sailing Ship stats.
According to the GMG, a sailing ship has AC 6, 125 hp, +6 to saves, moves at 60 feet, deals 3d6+12 damage on a ram, and has a minimum crew of 20 and a maximum crew of 50 + 120 passengers. It also has room for a total of two weapons - two siege engines or one siege engine and a ram.
According to UC, a sailing ship has AC 2, 900 hp, +0 to saves, has a maximum move speed of 180 feet, deals 8d8 damage on a ram, has a crew of 20 and can carry 200 more passengers. It also has room for either 20 (!) Large siege engines or 6 Huge ones.
These stats, as far as I can tell, refer to exactly the same kind of ship from the core book, but have extremely different statistics. I have no idea which ones to use. Can anyone help me unpack this?