The Good: Excellent rules for ship travel , navigation, construction, and crewing that can be adapted for any setting, and most time periods as is. Both normal and magical (flying) ships are included as well as rules for weather. The Bad: None, really. The document may be too large and expensive if you just want to buy it for a specific feature, like just ship travel, but that's a minor quibble.

This product is of course one of many detailing nautical adventuring for d20. What separates it from the pack? Good question. Well, for starters the book does not add new base classes, which is kind of refreshing; instead, the idea of sea worthy professions as craft skills is introduced. A pretty generic take on the usual genre appropriate prestige classes, creatures, ship templates, etc. is included. It also covers flying ships and underwater adventuring. This book may fall short, however, if you're looking for something steeped in historical accuracy. Disclaimer: I got this as a part of the Thanksgiving giveaway.