NOAA S-57 chart cell
Cook Inlet - Approaches to Anchorage
US4AK4UH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 357
- S-57 layers
- 27
- Published
- Apr 21, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.20000° N
- South
- 60.90000° N
- West
- 151.80000° W
- East
- 151.20000° W
- Center
- 61.05000° N, 151.50000° W
- Bounds area
- 314 sq nm
- Feature density
- 1.1366 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.2
- Smallest layer
- 1
- Largest layer
- 74
- Area sq km
- 1,077
- Features per sq km
- 0.33139
- DEPCNT Depth contour 74
- UWTROC Underwater rock 72
- DEPARE Depth area 69
- SBDARE Seabed area 27
- OBSTRN Obstruction 20
- RIVERS River 19
- COALNE Coastline 14
- BUISGL 10
- LNDRGN Land region 7
- MAGVAR Magnetic variation 6
- OFSPLF 5
- LNDELV 4
- M_QUAL Data quality 4
- SEAARE Sea area 4
- SOUNDG Sounding 4
- PIPARE 3
- BUAARE 2
- LAKARE 2
- LNDARE Land area 2
- SLOTOP 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/US4AK4UH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4UH/1.0/US4AK4UH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4UH/1.0/US4AK4UH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4UH/1.0/US4AK4UH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4UH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 21, 2025 | metadata.json |