{"type": "FeatureCollection", "_meta": {"__meta__": "synthetic", "disclaimer": "Synthetic demo data inspired by real Baltic geography, MMSI/OUI conventions, and infrastructure. Not real observations.", "dataset": "s3-loitering-critical-infra/infrastructure_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": "estlink-2", "kind": "cable", "name": "Estlink 2", "note": "HVDC submarine cable, synthetic alignment parallel to Estlink 1"}, "geometry": {"type": "LineString", "coordinates": [[24.93, 60.24], [24.87, 59.85], [24.82, 59.48]]}}, {"type": "Feature", "properties": {"featureId": "estlink-2-buffer", "kind": "cable_buffer", "name": "Estlink 2 500m buffer", "parent": "estlink-2"}, "geometry": {"type": "Polygon", "coordinates": [[[24.93, 60.24], [24.935, 60.24], [24.825, 59.48], [24.815, 59.48], [24.93, 60.24]]]}}, {"type": "Feature", "properties": {"featureId": "balticconnector", "kind": "pipeline", "name": "BalticConnector", "note": "Natural gas pipeline, synthetic alignment Inkoo-Paldiski"}, "geometry": {"type": "LineString", "coordinates": [[24.005, 59.94], [24.2, 59.7], [24.4, 59.4]]}}, {"type": "Feature", "properties": {"featureId": "balticconnector-buffer", "kind": "pipeline_buffer", "name": "BalticConnector 500m buffer", "parent": "balticconnector"}, "geometry": {"type": "Polygon", "coordinates": [[[24.005, 59.94], [24.01, 59.94], [24.405, 59.4], [24.395, 59.4], [24.005, 59.94]]]}}, {"type": "Feature", "properties": {"featureId": "cable-pipeline-junction", "kind": "junction", "name": "Cable-and-pipeline JUNCTION polygon", "note": "Overlap zone where BalticConnector and Estlink corridors cross within ~1.5 NM. Primary loitering target."}, "geometry": {"type": "Polygon", "coordinates": [[[24.498, 59.921], [24.642, 59.921], [24.642, 59.8475], [24.498, 59.8475], [24.498, 59.921]]]}}, {"type": "Feature", "properties": {"featureId": "finnish-eez-gof", "kind": "eez", "name": "Finnish EEZ (Gulf of Finland clip)"}, "geometry": {"type": "Polygon", "coordinates": [[[22.0, 59.5], [28.0, 59.5], [28.0, 60.6], [22.0, 60.6], [22.0, 59.5]]]}}, {"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]]}}]}