NOAA S-57 chart cell
Approaches to San Francisco Bay - Pillar Point to Pescadero Point, CA
US4CA1AJ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 564
- S-57 layers
- 50
- Published
- Jan 16, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 37.50000° N
- South
- 37.20000° N
- West
- 122.70000° W
- East
- 122.40000° W
- Center
- 37.35000° N, 122.55000° W
- Bounds area
- 258 sq nm
- Feature density
- 2.1868 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.3
- Smallest layer
- 1
- Largest layer
- 96
- Area sq km
- 885
- Features per sq km
- 0.63757
- SBDARE Seabed area 96
- UWTROC Underwater rock 74
- DEPCNT Depth contour 69
- LNDARE Land area 69
- DEPARE Depth area 68
- BUISGL 44
- COALNE Coastline 19
- WEDKLP 12
- RIVERS River 11
- LIGHTS Light 8
- WATTUR 7
- BUAARE 6
- OBSTRN Obstruction 6
- LNDELV 5
- M_QUAL Data quality 5
- BOYLAT Lateral buoy 4
- FOGSIG 4
- LNDRGN Land region 4
- SEAARE Sea area 4
- SLCONS Shoreline construction 4
Nearby Chart Cells
Approach usage band
Current Edition Files
The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US4CA1AJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA1AJ/1.0/US4CA1AJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA1AJ/1.0/US4CA1AJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA1AJ/1.0/US4CA1AJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA1AJ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 16, 2026 | metadata.json |