Bowditch American Practical Navigator 2019 PUB9 (PDF)

The American Practical Navigator (Pub 9) is a publication, which describes the modern principles of marine navigation and includes the formulas, tables, data and instructions required by navigators to perform the computations associated with dead reckoning, piloting, and celestial navigation. The publication also contains sections addressing the Practice of Navigation, Navigational Safety, Oceanography, Weather, and Electronic Navigation.