With a title like 'Ultimate Navigation Manual' and it being 350+ pages long, I would be very surprised if this book was not comprehensive.
I find this book to be brilliantly thought out. With such a range of information to put across to the reader, I feel that the author has done a good job of keeping the points of information concise which prevents it from being a heavy read.
It is one of those books that you can pick up and open to a random page and learn something new within minutes. The diagrams, and photography make easy to understand certain techniques that would be otherwise difficult to understand.