NOAA S-57 chart cell
Strait of Juan De Fuca Entrance
US4WA1IB
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 275
- S-57 layers
- 19
- Published
- Feb 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 48.30000° N
- South
- 48.00000° N
- West
- 125.10000° W
- East
- 124.80000° W
- Center
- 48.15000° N, 124.95000° W
- Bounds area
- 216 sq nm
- Feature density
- 1.2704 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 14.5
- Smallest layer
- 1
- Largest layer
- 100
- Area sq km
- 742
- Features per sq km
- 0.3704
- DEPARE Depth area 100
- DEPCNT Depth contour 96
- SBDARE Seabed area 40
- SOUNDG Sounding 10
- M_QUAL Data quality 8
- RESARE 4
- MIPARE 3
- ADMARE 2
- MAGVAR Magnetic variation 2
- CONZNE 1
- COSARE 1
- CTNARE Caution area 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- SEAARE Sea area 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/US4WA1IB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4WA1IB/1.0/US4WA1IB.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WA1IB/1.0/US4WA1IB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WA1IB/1.0/US4WA1IB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WA1IB/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Feb 5, 2026 | metadata.json |