[OSM-talk] Computing the 12-mile line

Adrian Frith adrian at frith.co.za
Fri Feb 20 21:27:28 GMT 2009

For those of you who have been adding the 12-mile "territorial waters"
line: did you calculate that data by offsetting the coastline/baseline?
And if so, how did you do it? I mean: what software did you use, and


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