NOAA S-57 chart cell
California
US4CA1GN
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,558
- S-57 layers
- 36
- Published
- Apr 1, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 34.20000° N
- South
- 33.90000° N
- West
- 120.30000° W
- East
- 120.00000° W
- Center
- 34.05000° N, 120.15000° W
- Bounds area
- 269 sq nm
- Feature density
- 5.7959 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 43.3
- Smallest layer
- 1
- Largest layer
- 356
- Area sq km
- 922
- Features per sq km
- 1.6898
- UWTROC Underwater rock 356
- SBDARE Seabed area 227
- DEPCNT Depth contour 184
- LNDARE Land area 180
- DEPARE Depth area 168
- COALNE Coastline 123
- WEDKLP 86
- LNDELV 54
- M_QUAL Data quality 33
- RIVERS River 25
- SOUNDG Sounding 22
- SLOTOP 19
- SEAARE Sea area 13
- LNDRGN Land region 10
- SLCONS Shoreline construction 9
- OBSTRN Obstruction 8
- WATTUR 6
- MAGVAR Magnetic variation 5
- MIPARE 5
- BUISGL 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/US4CA1GN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA1GN/1.0/US4CA1GN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA1GN/1.0/US4CA1GN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA1GN/1.0/US4CA1GN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA1GN/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 1, 2026 | metadata.json |