NOAA S-57 chart cell
Prince William Sound, Alaska
US4AK4TQ
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 2,231
- S-57 layers
- 34
- Published
- May 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.90000° N
- South
- 60.60000° N
- West
- 146.40000° W
- East
- 145.80000° W
- Center
- 60.75000° N, 146.10000° W
- Bounds area
- 317 sq nm
- Feature density
- 7.0367 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 65.6
- Smallest layer
- 1
- Largest layer
- 445
- Area sq km
- 1,087
- Features per sq km
- 2.05156
- UWTROC Underwater rock 445
- DEPARE Depth area 395
- DEPCNT Depth contour 377
- COALNE Coastline 364
- SBDARE Seabed area 176
- RIVERS River 146
- LNDARE Land area 111
- OBSTRN Obstruction 71
- M_QUAL Data quality 22
- LAKARE 18
- SEAARE Sea area 17
- LNDELV 15
- WEDKLP 15
- LNDRGN Land region 12
- SOUNDG Sounding 10
- SLOTOP 6
- SLOGRD 4
- CBLSUB 3
- CTNARE Caution area 3
- LIGHTS Light 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/US4AK4TQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4TQ/2.0/US4AK4TQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4TQ/2.0/US4AK4TQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4TQ/2.0/US4AK4TQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4TQ/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 15, 2026 | metadata.json |