NOAA S-57 chart cell
Alaska
US4AK3QW
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,576
- S-57 layers
- 23
- Published
- Jun 10, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.70000° N
- South
- 56.40000° N
- West
- 158.40000° W
- East
- 157.80000° W
- Center
- 56.55000° N, 158.10000° W
- Bounds area
- 358 sq nm
- Feature density
- 4.4063 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 68.5
- Smallest layer
- 1
- Largest layer
- 313
- Area sq km
- 1,227
- Features per sq km
- 1.28469
- UWTROC Underwater rock 313
- DEPCNT Depth contour 286
- DEPARE Depth area 278
- SBDARE Seabed area 196
- COALNE Coastline 166
- LNDARE Land area 89
- WEDKLP 84
- OBSTRN Obstruction 41
- RIVERS River 38
- LNDELV 27
- M_QUAL Data quality 18
- LNDMRK 11
- BUISGL 6
- SEAARE Sea area 5
- SOUNDG Sounding 4
- LNDRGN Land region 3
- MAGVAR Magnetic variation 3
- SLCONS Shoreline construction 3
- CBLSUB 1
- M_COVR Coverage 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/US4AK3QW.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3QW/2.0/US4AK3QW.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3QW/2.0/US4AK3QW.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3QW/2.0/US4AK3QW.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3QW/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 10, 2026 | metadata.json |