NOAA S-57 chart cell
California
US4CA1FN
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 175
- S-57 layers
- 27
- Published
- Apr 20, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 33.90000° N
- South
- 33.60000° N
- West
- 120.30000° W
- East
- 120.00000° W
- Center
- 33.75000° N, 120.15000° W
- Bounds area
- 270 sq nm
- Feature density
- 0.6487 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.5
- Smallest layer
- 1
- Largest layer
- 35
- Area sq km
- 925
- Features per sq km
- 0.18914
- DEPCNT Depth contour 35
- DEPARE Depth area 30
- SBDARE Seabed area 30
- M_QUAL Data quality 26
- SOUNDG Sounding 17
- UWTROC Underwater rock 5
- COALNE Coastline 4
- WEDKLP 4
- LNDARE Land area 3
- LIGHTS Light 2
- RESARE 2
- SEAARE Sea area 2
- ADMARE 1
- BOYSPP Special purpose buoy 1
- BUISGL 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- LNDELV 1
- LNDRGN Land region 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/US4CA1FN.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4CA1FN/1.1/US4CA1FN.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4CA1FN/1.1/US4CA1FN.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA1FN/1.1/US4CA1FN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA1FN/1.1/US4CA1FN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA1FN/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Apr 20, 2026 | metadata.json |