NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4UP
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 2,533
- S-57 layers
- 46
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.20000° N
- South
- 60.90000° N
- West
- 147.00000° W
- East
- 146.40000° W
- Center
- 61.05000° N, 146.70000° W
- Bounds area
- 314 sq nm
- Feature density
- 8.0647 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 55.1
- Smallest layer
- 1
- Largest layer
- 534
- Area sq km
- 1,077
- Features per sq km
- 2.35128
- UWTROC Underwater rock 534
- DEPCNT Depth contour 416
- DEPARE Depth area 356
- RIVERS River 260
- COALNE Coastline 227
- LNDARE Land area 209
- SBDARE Seabed area 178
- M_QUAL Data quality 55
- OBSTRN Obstruction 44
- LAKARE 40
- LNDRGN Land region 25
- ICEARE 23
- SOUNDG Sounding 22
- SEAARE Sea area 21
- LNDELV 20
- SLCONS Shoreline construction 12
- LIGHTS Light 11
- CBLSUB 10
- MORFAC 8
- DAYMAR 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/US4AK4UP.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4UP/2.0/US4AK4UP.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4UP/2.0/US4AK4UP.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4UP/2.0/US4AK4UP.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4UP/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 15, 2026 | metadata.json |