NOAA S-57 chart cell
Gulf of the Farallones - Farallon Islands, CA
US4CA2BH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 217
- S-57 layers
- 31
- Published
- Jan 16, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 37.80000° N
- South
- 37.50000° N
- West
- 123.30000° W
- East
- 123.00000° W
- Center
- 37.65000° N, 123.15000° W
- Bounds area
- 257 sq nm
- Feature density
- 0.8448 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7
- Smallest layer
- 1
- Largest layer
- 56
- Area sq km
- 881
- Features per sq km
- 0.24629
- DEPCNT Depth contour 56
- DEPARE Depth area 55
- M_QUAL Data quality 16
- SBDARE Seabed area 13
- SOUNDG Sounding 13
- LNDARE Land area 11
- COALNE Coastline 9
- UWTROC Underwater rock 9
- SEAARE Sea area 4
- LNDELV 3
- ADMARE 2
- CTNARE Caution area 2
- LIGHTS Light 2
- RDOCAL 2
- RESARE 2
- TSSBND 2
- TSSLPT 2
- BOYLAT Lateral buoy 1
- C_AGGR 1
- C_ASSO 1
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/US4CA2BH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA2BH/1.0/US4CA2BH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA2BH/1.0/US4CA2BH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA2BH/1.0/US4CA2BH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA2BH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 16, 2026 | metadata.json |