NOAA S-57 chart cell
Cook Inlet - Approaches to Anchorage
US4AK4UI
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 779
- S-57 layers
- 34
- Published
- Apr 21, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.20000° N
- South
- 60.90000° N
- West
- 151.20000° W
- East
- 150.60000° W
- Center
- 61.05000° N, 150.90000° W
- Bounds area
- 314 sq nm
- Feature density
- 2.4802 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 22.9
- Smallest layer
- 1
- Largest layer
- 208
- Area sq km
- 1,077
- Features per sq km
- 0.72312
- UWTROC Underwater rock 208
- DEPCNT Depth contour 157
- DEPARE Depth area 141
- SBDARE Seabed area 120
- COALNE Coastline 32
- SOUNDG Sounding 17
- OBSTRN Obstruction 15
- M_QUAL Data quality 13
- LNDARE Land area 12
- RIVERS River 9
- BUISGL 8
- LNDRGN Land region 7
- MAGVAR Magnetic variation 4
- BUAARE 3
- MORFAC 3
- PIPARE 3
- SEAARE Sea area 3
- BCNSPP Special purpose beacon 2
- CBLSUB 2
- CTNARE Caution area 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/US4AK4UI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4UI/1.0/US4AK4UI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4UI/1.0/US4AK4UI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4UI/1.0/US4AK4UI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4UI/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 21, 2025 | metadata.json |