NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4UO
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 2,304
- S-57 layers
- 26
- Published
- Apr 10, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.20000° N
- South
- 60.90000° N
- West
- 147.60000° W
- East
- 147.00000° W
- Center
- 61.05000° N, 147.30000° W
- Bounds area
- 314 sq nm
- Feature density
- 7.3356 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 88.6
- Smallest layer
- 1
- Largest layer
- 734
- Area sq km
- 1,077
- Features per sq km
- 2.13871
- UWTROC Underwater rock 734
- DEPARE Depth area 427
- DEPCNT Depth contour 419
- LNDARE Land area 223
- COALNE Coastline 131
- SBDARE Seabed area 92
- RIVERS River 87
- LNDELV 43
- M_QUAL Data quality 38
- SEAARE Sea area 26
- OBSTRN Obstruction 16
- ICEARE 13
- SOUNDG Sounding 13
- LAKARE 11
- UNSARE 7
- FSHFAC 6
- LNDRGN Land region 5
- CTNARE Caution area 3
- M_NSYS 2
- MAGVAR Magnetic variation 2
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/US4AK4UO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4UO/3.0/US4AK4UO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4UO/3.0/US4AK4UO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4UO/3.0/US4AK4UO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4UO/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Apr 10, 2026 | metadata.json |