{"type": "FeatureCollection", "_meta": {"__meta__": "synthetic", "disclaimer": "Synthetic demo data inspired by real Baltic geography, MMSI/OUI conventions, and infrastructure. Not real observations.", "dataset": "s7-drone-swarm-from-ship/infra_used", "version": "1.0"}, "features": [{"type": "Feature", "properties": {"featureId": "estlink-1", "kind": "cable", "name": "Estlink 1", "note": "HVDC submarine cable, synthetic alignment Helsinki-Tallinn"}, "geometry": {"type": "LineString", "coordinates": [[24.91, 60.24], [24.85, 59.85], [24.8, 59.48]]}}, {"type": "Feature", "properties": {"featureId": "estlink-1-buffer", "kind": "cable_buffer", "name": "Estlink 1 500m buffer", "parent": "estlink-1"}, "geometry": {"type": "Polygon", "coordinates": [[[24.91, 60.24], [24.915, 60.24], [24.805, 59.48], [24.795, 59.48], [24.91, 60.24]]]}}, {"type": "Feature", "properties": {"featureId": "shipping-lane-eb", "kind": "lane", "name": "GoF eastbound TSS centerline"}, "geometry": {"type": "LineString", "coordinates": [[22.5, 59.65], [24.0, 59.75], [25.5, 59.85], [27.0, 59.95]]}}, {"type": "Feature", "properties": {"featureId": "shipping-lane-wb", "kind": "lane", "name": "GoF westbound TSS centerline"}, "geometry": {"type": "LineString", "coordinates": [[27.0, 60.05], [25.5, 59.95], [24.0, 59.85], [22.5, 59.75]]}}, {"type": "Feature", "properties": {"featureId": "port-helsinki", "kind": "port", "name": "Helsinki"}, "geometry": {"type": "Point", "coordinates": [24.95, 60.17]}}, {"type": "Feature", "properties": {"featureId": "port-kilpilahti", "kind": "port", "name": "Inkoo / Kilpilahti"}, "geometry": {"type": "Point", "coordinates": [25.55, 60.3]}}, {"type": "Feature", "properties": {"featureId": "site-kilpilahti", "kind": "industrial_site", "name": "Kilpilahti petrochemical complex", "note": "Recon target polygon in S5"}, "geometry": {"type": "Polygon", "coordinates": [[[26.005, 60.15], [26.015, 60.15], [26.015, 60.143], [26.005, 60.143], [26.005, 60.15]]]}}, {"type": "Feature", "properties": {"featureId": "site-vuosaari", "kind": "industrial_site", "name": "Helsinki Vuosaari container port"}, "geometry": {"type": "Polygon", "coordinates": [[[25.18, 60.205], [25.205, 60.205], [25.205, 60.215], [25.18, 60.215], [25.18, 60.205]]]}}]}