There's Bowditch American Practical Navigator, and Dutton's Navigation and Piloting, then there's every one else.
Why? experience, I taught Celestial Navigation.
Thanks, I have Dutton's, and plan on reading it next.
Have you read Karl's book? Just curious what someone with experience (especially with teaching exp) thinks of it. As I begin to understand it...its seems like it was explained in a rather difficult manner?