NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4TR
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 537
- S-57 layers
- 33
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.90000° N
- South
- 60.60000° N
- West
- 145.80000° W
- East
- 145.20000° W
- Center
- 60.75000° N, 145.50000° W
- Bounds area
- 317 sq nm
- Feature density
- 1.6937 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 16.3
- Smallest layer
- 1
- Largest layer
- 130
- Area sq km
- 1,087
- Features per sq km
- 0.49381
- DEPCNT Depth contour 130
- DEPARE Depth area 127
- COALNE Coastline 52
- SBDARE Seabed area 50
- UWTROC Underwater rock 29
- LNDARE Land area 26
- M_QUAL Data quality 15
- RIVERS River 14
- LIGHTS Light 8
- LNDELV 8
- SEAARE Sea area 8
- SOUNDG Sounding 8
- BCNLAT Lateral beacon 7
- DAYMAR 7
- OBSTRN Obstruction 5
- SLOTOP 5
- WEDKLP 5
- CBLARE 3
- LNDRGN Land region 3
- MAGVAR Magnetic variation 3
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/US4AK4TR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4TR/3.0/US4AK4TR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4TR/3.0/US4AK4TR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4TR/3.0/US4AK4TR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4TR/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 15, 2026 | metadata.json |