NOAA S-57 chart cell
North Pacific Ocean - West of Humboldt Bay, CA
US4CA2LC
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 137
- S-57 layers
- 14
- Published
- Apr 22, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 40.80000° N
- South
- 40.50000° N
- West
- 124.80000° W
- East
- 124.50000° W
- Center
- 40.65000° N, 124.65000° W
- Bounds area
- 246 sq nm
- Feature density
- 0.5566 / sq nm
Chart Statistics
14 largest layers shown
- Average features per layer
- 9.8
- Smallest layer
- 1
- Largest layer
- 37
- Area sq km
- 844
- Features per sq km
- 0.16227
- DEPCNT Depth contour 37
- DEPARE Depth area 36
- M_QUAL Data quality 26
- SBDARE Seabed area 16
- SOUNDG Sounding 10
- SEAARE Sea area 4
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- TESARE 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/US4CA2LC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA2LC/1.0/US4CA2LC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA2LC/1.0/US4CA2LC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA2LC/1.0/US4CA2LC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA2LC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 22, 2026 | metadata.json |