NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4UQ
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 675
- S-57 layers
- 45
- Published
- May 7, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.20000° N
- South
- 60.90000° N
- West
- 146.40000° W
- East
- 145.80000° W
- Center
- 61.05000° N, 146.10000° W
- Bounds area
- 314 sq nm
- Feature density
- 2.1491 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 15
- Smallest layer
- 1
- Largest layer
- 107
- Area sq km
- 1,077
- Features per sq km
- 0.62658
- RIVERS River 107
- SLCONS Shoreline construction 96
- COALNE Coastline 64
- DEPCNT Depth contour 52
- PONTON 42
- DEPARE Depth area 40
- LNDARE Land area 25
- MORFAC 25
- LIGHTS Light 23
- BUISGL 20
- OBSTRN Obstruction 19
- BCNSPP Special purpose beacon 14
- M_QUAL Data quality 13
- SBDARE Seabed area 13
- UWTROC Underwater rock 13
- SILTNK 11
- LNDRGN Land region 10
- ICEARE 8
- BCNLAT Lateral beacon 7
- DAYMAR 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/US4AK4UQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4UQ/2.0/US4AK4UQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4UQ/2.0/US4AK4UQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4UQ/2.0/US4AK4UQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4UQ/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 7, 2026 | metadata.json |