| #1602305 in Books | 2010-01-01 | Original language:English | PDF # 1 | 10.75 x8.50 x.10l,.5 | Binding: Misc. Supplies | 2 pages
||2 of 2 people found the following review helpful.| useful, durable, quick emergency reference|By gt surber|The "Emergency Navigation Card" is a laminated two sided sheet of the essential information I would want if I was stranded, lost, or otherwise location challenged and my modern means of navigation were disabled. It contains, steering by the sun, How to check a compass, finding he North Pole, How to find boat speed, star
A wealth of information is provided: an emergency almanac for the sun, and declination tables for the stars; several methods of sight reduction, including one that requires only the card itself; and angular markings on the perimeter of the card that allows approximate altitude measurements of celestial bodies. With this card and a watch you can find your way to any major port in the world. Other information includes how to steer by the stars and finding your boat's spee...
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You can specify the type of files you want, for your gadget.Emergency Navigation Card | David Burch. A good, fresh read, highly recommended.
