Know the waters around you.
One position. Four maritime questions. Try them separately, or combine them in a black-water discharge check.
Not for navigation or discharge clearance. This demo checks geometry and an illustrative distance rule; vessel requirements, local restrictions and legal baselines still need checking.
Click the map or drag the position marker. Shaded pieces show nearby parts of the selected zone; lines show the nearest point.
Can I open my black-water tank here?
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Try the same query
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No result yet.
From a position to a decision
The library answers geometry questions. The black-water example combines territory context with coastline distance, then calls a separate regulations lookup. It does not turn a distance into permission: vessel details, local restrictions and legally defined baselines belong in the caller’s rules service.
Maritime boundaries: Flanders Marine Institute / Marine Regions, CC-BY 4.0.