This is a sourcebook for Mongoose Publishing's Conan: Role Playing Game. It is written to give source material, game rules and character options for enriching the pirates who plague the seas of the Hyborian world. There are distinct (and usually competitive) groups of pirates, as well as lone ships, and each of the possibilities are delved into in this book.
Mr. Darlage has drawn inspiration from the source material of Howard's stories and I assume those of the later pastiche writers. There are more options for feats available; wierd & fell beasts of the seas which could plague a ship; an innovative system to simply yet thoroughly create ports or towns for pirates to frequent, raid or spy on; plenty of ideas to make adventures from, and even new spells and magical items which sorcerers plying the seas could employ. The overall system is made to be quick rather than tedious, as Darlage notes the stories never dwell on calms when ships are stranded without winds to stir the sails. Rather, the stories skip the down time, and concentrate on combat and plot twists which are common, and the book suggests how to employ both. Depending on which type of pirate group you're considering, different types of ships are listed (though without detailed deckplans, the book has isometric sketches to show what they'd look like) and game stats for such vessels; as well as types of captains, officers, or crews (descriptions and NPC templates). If you want, weather systems (tables) are offered, as well as chases & combat sequences, since naval warfare is rather different from on land, this is a great part of the book.
A good purchase if you're even considering adding these scurvy dogs to your game, aaargh. :)
Hope this review helps.