NOAA S-57 chart cell
Alaska
US4AK4QT
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 629
- S-57 layers
- 26
- Published
- Jan 5, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 144.60000° W
- East
- 144.00000° W
- Center
- 59.85000° N, 144.30000° W
- Bounds area
- 326 sq nm
- Feature density
- 1.93 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 24.2
- Smallest layer
- 1
- Largest layer
- 197
- Area sq km
- 1,118
- Features per sq km
- 0.5627
- UWTROC Underwater rock 197
- SBDARE Seabed area 106
- DEPCNT Depth contour 65
- DEPARE Depth area 64
- LNDARE Land area 64
- COALNE Coastline 37
- RIVERS River 26
- OBSTRN Obstruction 25
- M_QUAL Data quality 9
- BUISGL 7
- LNDRGN Land region 4
- LIGHTS Light 3
- SEAARE Sea area 3
- WRECKS Wreck 3
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- UNSARE 2
- WATTUR 2
- ADMARE 1
- CONZNE 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/US4AK4QT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4QT/1.0/US4AK4QT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4QT/1.0/US4AK4QT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4QT/1.0/US4AK4QT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4QT/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 5, 2024 | metadata.json |