NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4RO
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,495
- S-57 layers
- 26
- Published
- Dec 7, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.30000° N
- South
- 60.00000° N
- West
- 147.60000° W
- East
- 147.00000° W
- Center
- 60.15000° N, 147.30000° W
- Bounds area
- 323 sq nm
- Feature density
- 4.629 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 57.5
- Smallest layer
- 1
- Largest layer
- 276
- Area sq km
- 1,108
- Features per sq km
- 1.34959
- UWTROC Underwater rock 276
- DEPCNT Depth contour 264
- DEPARE Depth area 261
- SBDARE Seabed area 241
- COALNE Coastline 118
- RIVERS River 81
- LNDARE Land area 78
- WEDKLP 49
- OBSTRN Obstruction 32
- M_QUAL Data quality 25
- LAKARE 14
- LNDELV 13
- SOUNDG Sounding 13
- LNDRGN Land region 9
- SEAARE Sea area 8
- PILPNT 3
- ACHARE Anchorage area 1
- CBLARE 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/US4AK4RO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4RO/1.0/US4AK4RO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4RO/1.0/US4AK4RO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4RO/1.0/US4AK4RO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4RO/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 7, 2023 | metadata.json |