NOAA S-57 chart cell
California
US4CA1HN
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 244
- S-57 layers
- 39
- Published
- Apr 1, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 34.50000° N
- South
- 34.20000° N
- West
- 120.30000° W
- East
- 120.00000° W
- Center
- 34.35000° N, 120.15000° W
- Bounds area
- 268 sq nm
- Feature density
- 0.9109 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.3
- Smallest layer
- 1
- Largest layer
- 38
- Area sq km
- 919
- Features per sq km
- 0.26559
- DEPCNT Depth contour 38
- SBDARE Seabed area 27
- UWTROC Underwater rock 24
- PIPSOL 21
- DEPARE Depth area 18
- OBSTRN Obstruction 12
- WEDKLP 12
- RIVERS River 11
- M_QUAL Data quality 10
- SOUNDG Sounding 8
- CBLSUB 6
- LNDARE Land area 6
- RESARE 6
- BUAARE 4
- LNDELV 4
- SLCONS Shoreline construction 4
- CTNARE Caution area 3
- OFSPLF 3
- LNDMRK 2
- MORFAC 2
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/US4CA1HN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA1HN/1.0/US4CA1HN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA1HN/1.0/US4CA1HN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA1HN/1.0/US4CA1HN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA1HN/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 1, 2026 | metadata.json |