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GPS for Mariners

A must for any boater that wants to know what GPS does and how to operate it. The difference between maps on land and charts on the water. Navigation techniques with course, speed, distance, bearings and more. By Robert J Sweet.

The Ship's Store Return Policy:If you should receive defective merchandise or you are not happy with your purchase, USPS will accept returns and exchanges of unworn, unwashed merchandise with a valid receipt within 90 days of purchase.

United States Power Squadrons 1504 Blue Ridge Road, Raleigh, North Carolina 27607
Tel: 1-888-FOR-USPS, ext 0
Fax: 1-919-836-0813
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