NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4SR
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 965
- S-57 layers
- 50
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.60000° N
- South
- 60.30000° N
- West
- 145.80000° W
- East
- 145.20000° W
- Center
- 60.45000° N, 145.50000° W
- Bounds area
- 320 sq nm
- Feature density
- 3.0155 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 19.3
- Smallest layer
- 1
- Largest layer
- 233
- Area sq km
- 1,098
- Features per sq km
- 0.87918
- DEPCNT Depth contour 233
- DEPARE Depth area 170
- COALNE Coastline 97
- LNDARE Land area 52
- SLCONS Shoreline construction 51
- M_QUAL Data quality 43
- UWTROC Underwater rock 35
- SBDARE Seabed area 31
- BUISGL 22
- RIVERS River 22
- SEAARE Sea area 21
- PILPNT 20
- PONTON 17
- LIGHTS Light 14
- LNDRGN Land region 11
- SOUNDG Sounding 11
- MORFAC 9
- OBSTRN Obstruction 9
- DAYMAR 8
- WRECKS Wreck 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/US4AK4SR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4SR/4.0/US4AK4SR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4SR/4.0/US4AK4SR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4SR/4.0/US4AK4SR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4SR/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 15, 2026 | metadata.json |