NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4TP
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 2,420
- S-57 layers
- 47
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.90000° N
- South
- 60.60000° N
- West
- 147.00000° W
- East
- 146.40000° W
- Center
- 60.75000° N, 146.70000° W
- Bounds area
- 317 sq nm
- Feature density
- 7.6328 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 51.5
- Smallest layer
- 1
- Largest layer
- 594
- Area sq km
- 1,087
- Features per sq km
- 2.22536
- UWTROC Underwater rock 594
- DEPCNT Depth contour 410
- DEPARE Depth area 389
- SBDARE Seabed area 249
- RIVERS River 185
- COALNE Coastline 158
- OBSTRN Obstruction 81
- LNDARE Land area 74
- M_QUAL Data quality 51
- SLOTOP 23
- LAKARE 20
- SLCONS Shoreline construction 19
- BUISGL 18
- SEAARE Sea area 18
- WEDKLP 18
- SOUNDG Sounding 16
- LNDRGN Land region 12
- DAYMAR 10
- SLOGRD 9
- CBLSUB 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/US4AK4TP.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4TP/2.0/US4AK4TP.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4TP/2.0/US4AK4TP.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4TP/2.0/US4AK4TP.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4TP/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 15, 2026 | metadata.json |