NOAA S-57 chart cell
Gulf of the Farallones - East of the Farallon Islands, CA
US4CA2BI
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 141
- S-57 layers
- 29
- Published
- Jan 16, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 37.80000° N
- South
- 37.50000° N
- West
- 123.00000° W
- East
- 122.70000° W
- Center
- 37.65000° N, 122.85000° W
- Bounds area
- 257 sq nm
- Feature density
- 0.5489 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4.9
- Smallest layer
- 1
- Largest layer
- 25
- Area sq km
- 881
- Features per sq km
- 0.16003
- DEPCNT Depth contour 25
- DEPARE Depth area 24
- M_QUAL Data quality 21
- SBDARE Seabed area 19
- SOUNDG Sounding 8
- RDOCAL 4
- TSSBND 4
- TSSLPT 4
- RESARE 3
- SEAARE Sea area 3
- TSEZNE 3
- WRECKS Wreck 3
- BOYSPP Special purpose buoy 2
- CTNARE Caution area 2
- LIGHTS Light 2
- ADMARE 1
- C_AGGR 1
- COALNE Coastline 1
- CONZNE 1
- COSARE 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/US4CA2BI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA2BI/1.0/US4CA2BI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA2BI/1.0/US4CA2BI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA2BI/1.0/US4CA2BI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA2BI/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 16, 2026 | metadata.json |