2017 Edition, Vol I & II Combined
The American Practical Navigator (NGA Pub No. 9) 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. It is prepared and published by the National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency).
Next edition available: 1-Apr-2020
Publisher: National Geospatial-Intelligence Agency (NGA)
Publication Date: 1-Sep-2019