NOAA S-57 chart cell
Willapa Bay, WA
US4WA1DF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,010
- S-57 layers
- 45
- Published
- Nov 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.80000° N
- South
- 46.50000° N
- West
- 123.90000° W
- East
- 123.60000° W
- Center
- 46.65000° N, 123.75000° W
- Bounds area
- 223 sq nm
- Feature density
- 4.535 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 22.4
- Smallest layer
- 1
- Largest layer
- 149
- Area sq km
- 764
- Features per sq km
- 1.3222
- PILPNT 149
- SLCONS Shoreline construction 124
- COALNE Coastline 116
- RIVERS River 99
- DEPARE Depth area 84
- LNDRGN Land region 66
- DEPCNT Depth contour 65
- OBSTRN Obstruction 49
- LNDARE Land area 46
- DAYMAR 23
- BCNLAT Lateral beacon 21
- SEAARE Sea area 15
- LIGHTS Light 14
- PONTON 14
- BRIDGE 13
- M_QUAL Data quality 11
- DRGARE 9
- LAKARE 9
- BUISGL 8
- DYKCON 7
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/US4WA1DF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4WA1DF/1.0/US4WA1DF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WA1DF/1.0/US4WA1DF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WA1DF/1.0/US4WA1DF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WA1DF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Nov 25, 2024 | metadata.json |