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post #24 of Old 02-28-2010
AdamLein
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Quote:
Originally Posted by Boasun View Post
One other:
the scale of a chart is 1:80,000. What distance at sea does a distance of 3.5 inches on the chart represent? What distance on the chart represents an actual distance of 14.3 NM?
3.5 in at 1:80,000 = 3.84 nm
13.3 nm at 1:80,000 = 13.03 in

Quote:
Remember that a NM is 6076.11549 ft thought we use 6000 ft for practical purposes.
Okay,
3.5 in at 1:80,000 = 3.89 nm
14.3 nm at 1:80,000 = 12.87 in

s/v Laelia - 1978 Pearson 365 ketch
s/v Essorant - 1972 Catalina 27
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