{"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/decoy_survey_box", "version": "1.0"}, "features": [{"type": "Feature", "properties": {"featureId": "venla-survey-box", "name": "VENLA RESEARCH lawn-mower survey box (decoy)", "note": "\u2248 3.7 NM SE of JUNCTION centroid, outside all 500 m infra buffers"}, "geometry": {"type": "Polygon", "coordinates": [[[24.65575, 59.819], [24.66025, 59.819], [24.66025, 59.831], [24.65575, 59.831], [24.65575, 59.819]]]}}]}