Disclaimer
Map-based estimates are not official surveys or navigation advice.
Measurement limits
Results depend on the points you select, the coordinate system, source data and calculation assumptions. Map resolution, outdated imagery, rounding and Earth's shape can affect the result. Extra decimal places do not establish accuracy.
Property and navigation
Drawn boundaries are not legally established property boundaries. Sea routes are not checked for depth, obstacles, closures, weather or navigability. Use official geodata, charts, current notices and appropriate professional advice for consequential decisions.
External services and corrections
External map providers and source websites can change or become unavailable. Report suspected errors to [email protected] with enough information to reproduce the result. Independently check important results before relying on them.