NOAA S-57 chart cell
North Pacific Ocean - Humboldt Bay to False Cape, CA
US4CA2LD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 951
- S-57 layers
- 55
- Published
- Apr 22, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 40.80000° N
- South
- 40.50000° N
- West
- 124.50000° W
- East
- 124.20000° W
- Center
- 40.65000° N, 124.35000° W
- Bounds area
- 246 sq nm
- Feature density
- 3.8635 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.3
- Smallest layer
- 1
- Largest layer
- 204
- Area sq km
- 844
- Features per sq km
- 1.12641
- DEPCNT Depth contour 204
- DEPARE Depth area 166
- COALNE Coastline 78
- UWTROC Underwater rock 67
- SLCONS Shoreline construction 60
- SBDARE Seabed area 59
- LNDRGN Land region 32
- RIVERS River 24
- M_QUAL Data quality 23
- SOUNDG Sounding 22
- DRGARE 21
- LNDARE Land area 21
- BUISGL 18
- OBSTRN Obstruction 10
- PILPNT 10
- SEAARE Sea area 10
- BUAARE 9
- LNDELV 9
- DAYMAR 8
- LAKARE 8
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/US4CA2LD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA2LD/1.0/US4CA2LD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA2LD/1.0/US4CA2LD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA2LD/1.0/US4CA2LD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA2LD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 22, 2026 | metadata.json |