I'm a fan of pirate/sailing genres and have yet to find a good game (other than Age of Pirates)
Tortuga: Two Treasures is a horrible Pirate game.
It only had a few things were interesting:
-Kraken Bait can be dropped in the water to summon a kraken to attack nearest ship.
-You can pick up dropped sailors (or they drown or get eaten by sharks)
-There are Reefs that can slow down and damage hull of ship
-Islands, ships, and sailing world model scale looked nice. The layout of waterways is pretty decent,
-Enemies killed turn to grave stones. The more enemies you kill in an area the higher your "cemetary bonus"
-3-D ship models in boardings look nice. (Even though they are cartoon-like)
-You can deploy a dingy boat from your main ship to enter shallow areas and rivers.
Things that were Bad:
-Arcade game play
-Ships sail too fast (like speedboats)
-Too colorful (Very Cartoon-like)
-Forced to play Storyline (no open ended game play)
-Simple Trading/Reward System (where you buy special abilities after each level)
-Simple level by level missions (very boring)
-Storyline is a cheap immitation of Pirates of the Carribbean Movie
-Menu Interface looks like it was made in 5 minutes using Macromedia Flash
-Character animations are awkward and disproportional (short legs, long arms)