NOAA S-57 chart cell
Alaska
US4AK4QU
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 57
- S-57 layers
- 21
- Published
- Jan 5, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 144.00000° W
- East
- 143.40000° W
- Center
- 59.85000° N, 143.70000° W
- Bounds area
- 326 sq nm
- Feature density
- 0.1749 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 2.7
- Smallest layer
- 1
- Largest layer
- 20
- Area sq km
- 1,118
- Features per sq km
- 0.05099
- SBDARE Seabed area 20
- OBSTRN Obstruction 5
- COALNE Coastline 4
- DEPARE Depth area 4
- M_QUAL Data quality 4
- DEPCNT Depth contour 2
- M_NPUB 2
- SOUNDG Sounding 2
- UWTROC Underwater rock 2
- ADMARE 1
- CONZNE 1
- CTNARE Caution area 1
- EXEZNE 1
- LNDARE Land area 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- SEAARE Sea area 1
- UNSARE 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/US4AK4QU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4QU/1.0/US4AK4QU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4QU/1.0/US4AK4QU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4QU/1.0/US4AK4QU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4QU/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 5, 2024 | metadata.json |