{"type": "FeatureCollection", "_meta": {"__meta__": "synthetic", "disclaimer": "Synthetic demo data inspired by real Baltic geography, MMSI/OUI conventions, and infrastructure. Not real observations.", "dataset": "s5-drone-launch-from-ship/finnish_coastline_south", "version": "1.0"}, "features": [{"type": "Feature", "properties": {"featureId": "finnish-coastline-south", "name": "Finnish coastline (south) \u2014 synthetic approximation", "note": "Coarse MultiLineString sampled between Hanko and Kotka"}, "geometry": {"type": "MultiLineString", "coordinates": [[[22.97, 59.83], [23.4, 59.86], [23.9, 59.92], [24.4, 59.99], [24.7, 60.05], [24.92, 60.1], [25.05, 60.16]], [[25.05, 60.16], [25.3, 60.21], [25.55, 60.3], [25.75, 60.34], [26.2, 60.4], [26.6, 60.43], [26.95, 60.46]]]}}]}