NOAA S-57 chart cell
Willapa Bay, WA
US4WA1DD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 117
- S-57 layers
- 15
- Published
- Nov 22, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.80000° N
- South
- 46.50000° N
- West
- 124.50000° W
- East
- 124.20000° W
- Center
- 46.65000° N, 124.35000° W
- Bounds area
- 223 sq nm
- Feature density
- 0.5253 / sq nm
Chart Statistics
15 largest layers shown
- Average features per layer
- 7.8
- Smallest layer
- 1
- Largest layer
- 33
- Area sq km
- 764
- Features per sq km
- 0.15317
- DEPARE Depth area 33
- DEPCNT Depth contour 32
- SBDARE Seabed area 30
- M_QUAL Data quality 6
- SOUNDG Sounding 3
- M_NPUB 2
- OBSTRN Obstruction 2
- SEAARE Sea area 2
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- TESARE 1
- WRECKS Wreck 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/US4WA1DD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4WA1DD/1.0/US4WA1DD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WA1DD/1.0/US4WA1DD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WA1DD/1.0/US4WA1DD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WA1DD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Nov 22, 2024 | metadata.json |