- Resources & Information
NGA Plotting Chart 931 is for use between lattitudes of 56° to 60° (North or South).
The chart is 35 inches by 46 inches, and the center lattitude is 58°, where a scale of 1:582,040 makes every 4 inches on the chart equal to one second of longitude.
American Nautical Services, Inc.
3311 S Andrews Ave, Suite 11
Fort Lauderdale, FL 33316
United States of America
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