NOAA S-57 chart cell
Alaska
US4AK3QX
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,630
- S-57 layers
- 26
- Published
- Feb 20, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.70000° N
- South
- 56.40000° N
- West
- 157.80000° W
- East
- 157.20000° W
- Center
- 56.55000° N, 157.50000° W
- Bounds area
- 358 sq nm
- Feature density
- 4.5573 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 62.7
- Smallest layer
- 1
- Largest layer
- 362
- Area sq km
- 1,227
- Features per sq km
- 1.3287
- DEPCNT Depth contour 362
- DEPARE Depth area 353
- UWTROC Underwater rock 295
- SBDARE Seabed area 256
- COALNE Coastline 101
- LNDARE Land area 94
- WEDKLP 54
- M_QUAL Data quality 24
- OBSTRN Obstruction 21
- LNDELV 17
- RIVERS River 17
- SOUNDG Sounding 7
- BUISGL 5
- LNDRGN Land region 4
- ADMARE 3
- SEAARE Sea area 3
- LNDMRK 2
- MAGVAR Magnetic variation 2
- SLCONS Shoreline construction 2
- WATTUR 2
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/US4AK3QX.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3QX/1.0/US4AK3QX.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3QX/1.0/US4AK3QX.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3QX/1.0/US4AK3QX.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3QX/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Feb 20, 2025 | metadata.json |