approach · China
Shanghai / Ningbo Approaches
Shanghai / Ningbo Approaches shows 103 likely vessel detections versus a baseline of 64. Congestion is high. Trend is unknown compared with the prior observation.
103 likely detections
Web Mercator zone fit
Likely vessel detections
103
Baseline
64
Anomaly
+61%
Trend
unknown
Historical Trend
Likely vessel detections by observation date.
1
Observation
- Source
- sentinel_1_sar
- Satellite
- Sentinel-1A
- Product
- S1A_IW_GRDH_1SDV_20260429T095517_20260429T095542_064293_08182E_DBE9_COG
- Status
- processed
- Baseline source
- MVP analyst baseline
Methodology boundary
Seahound does not track individual vessels. Detections are satellite-derived estimates of vessel-like objects and are used to infer zone-level congestion risk from timestamped Sentinel observations.