NOAA S-57 chart cell
Grenville, WA
US4WA1FD
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 163
- S-57 layers
- 26
- Published
- Jun 12, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 47.40000° N
- South
- 47.10000° N
- West
- 124.50000° W
- East
- 124.20000° W
- Center
- 47.25000° N, 124.35000° W
- Bounds area
- 220 sq nm
- Feature density
- 0.7401 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.3
- Smallest layer
- 1
- Largest layer
- 30
- Area sq km
- 755
- Features per sq km
- 0.21579
- UWTROC Underwater rock 30
- DEPARE Depth area 21
- DEPCNT Depth contour 21
- COALNE Coastline 19
- SBDARE Seabed area 18
- LNDARE Land area 14
- OBSTRN Obstruction 9
- LNDELV 4
- RIVERS River 4
- BUAARE 2
- LNDRGN Land region 2
- M_QUAL Data quality 2
- RESARE 2
- SEAARE Sea area 2
- SOUNDG Sounding 2
- ADMARE 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 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/US4WA1FD.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4WA1FD/1.1/US4WA1FD.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4WA1FD/1.1/US4WA1FD.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WA1FD/1.1/US4WA1FD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WA1FD/1.1/US4WA1FD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WA1FD/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Jun 12, 2026 | metadata.json |