NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4RQ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 62
- S-57 layers
- 16
- Published
- Dec 7, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.30000° N
- South
- 60.00000° N
- West
- 146.40000° W
- East
- 145.80000° W
- Center
- 60.15000° N, 146.10000° W
- Bounds area
- 323 sq nm
- Feature density
- 0.192 / sq nm
Chart Statistics
16 largest layers shown
- Average features per layer
- 3.9
- Smallest layer
- 1
- Largest layer
- 22
- Area sq km
- 1,108
- Features per sq km
- 0.05597
- SBDARE Seabed area 22
- DEPCNT Depth contour 8
- SOUNDG Sounding 8
- DEPARE Depth area 7
- M_QUAL Data quality 5
- MAGVAR Magnetic variation 2
- ADMARE 1
- CONZNE 1
- CTNARE Caution area 1
- EXEZNE 1
- FAIRWY Fairway 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- PRCARE 1
- SEAARE Sea area 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/US4AK4RQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4RQ/1.0/US4AK4RQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4RQ/1.0/US4AK4RQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4RQ/1.0/US4AK4RQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4RQ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 7, 2023 | metadata.json |