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post #26 of Old 02-28-2010
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Re: Chart scales.

I use Canadian Chart 3462 in my navigation class; it is 1:80,000 chart. However, the 1:80,000 is measured at 49˚ 30'N which is not on the chart. The top of the chart is 48˚ 54'N. As this is a Mercator projection, it seems to me that converting distances measured using the scale would not be exact.

In you view, would this be a correct interpretation?

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