I've bought several of these books for my uncles who served in the Navy during WWII. They loved it! They told me this was one of the best books on PT Boats out there. I liked it because I don't know a lot about these boats and I found it informative and my uncles know a lot about these boats and found it informative too. One of my uncles especially liked the cut out designs - because he has been making models of several boats and he used this book to help him make a PT.