NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4SO
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,479
- S-57 layers
- 26
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.60000° N
- South
- 60.30000° N
- West
- 147.60000° W
- East
- 147.00000° W
- Center
- 60.45000° N, 147.30000° W
- Bounds area
- 320 sq nm
- Feature density
- 4.6217 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 56.9
- Smallest layer
- 1
- Largest layer
- 315
- Area sq km
- 1,098
- Features per sq km
- 1.34746
- DEPCNT Depth contour 315
- DEPARE Depth area 295
- UWTROC Underwater rock 273
- SBDARE Seabed area 226
- COALNE Coastline 84
- LNDARE Land area 72
- M_QUAL Data quality 56
- OBSTRN Obstruction 27
- RIVERS River 26
- LAKARE 25
- WEDKLP 22
- SOUNDG Sounding 15
- SEAARE Sea area 10
- LNDRGN Land region 7
- LIGHTS Light 4
- MAGVAR Magnetic variation 4
- ACHARE Anchorage area 3
- BCNSPP Special purpose beacon 3
- DAYMAR 3
- BOYLAT Lateral buoy 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/US4AK4SO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4SO/2.0/US4AK4SO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4SO/2.0/US4AK4SO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4SO/2.0/US4AK4SO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4SO/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 15, 2026 | metadata.json |