NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4PQ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 170
- S-57 layers
- 25
- Published
- Dec 7, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.70000° N
- South
- 59.40000° N
- West
- 146.40000° W
- East
- 145.80000° W
- Center
- 59.55000° N, 146.10000° W
- Bounds area
- 329 sq nm
- Feature density
- 0.517 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.8
- Smallest layer
- 1
- Largest layer
- 68
- Area sq km
- 1,128
- Features per sq km
- 0.15072
- UWTROC Underwater rock 68
- DEPCNT Depth contour 20
- DEPARE Depth area 18
- SBDARE Seabed area 12
- COALNE Coastline 7
- OBSTRN Obstruction 6
- WEDKLP 6
- WATTUR 5
- LNDMRK 4
- M_QUAL Data quality 4
- LNDARE Land area 3
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- WRECKS Wreck 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- LIGHTS Light 1
- M_COVR Coverage 1
- M_NPUB 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/US4AK4PQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4PQ/1.0/US4AK4PQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4PQ/1.0/US4AK4PQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4PQ/1.0/US4AK4PQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4PQ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 7, 2023 | metadata.json |