Captain's Supplies1120 NW Ballard Way | Seattle, WA 98107
main: 206.283.7242 | fax: 206.281.4921 | toll-free: 800.448.2278
$9.95Formally published by NGA (NIMA Form 8660-9), these 5.5" x 8.5" cards are printed double-sided. 100 cards per pack. Use in conjuction with the Notice to Mariners to make and track changes and updates to nautical charts.
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).
Reprint of Volume II of the 1981 edition of the American Practical Navigator, containing forumlas used for training purposes.