NOAA S-57 chart cell
Cook Inlet - Approaches to Anchorage
US4AK4VK
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 850
- S-57 layers
- 46
- Published
- Sep 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 61.50000° N
- South
- 61.20000° N
- West
- 150.00000° W
- East
- 149.40000° W
- Center
- 61.35000° N, 149.70000° W
- Bounds area
- 311 sq nm
- Feature density
- 2.7322 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 18.5
- Smallest layer
- 1
- Largest layer
- 188
- Area sq km
- 1,067
- Features per sq km
- 0.79657
- UWTROC Underwater rock 188
- DEPCNT Depth contour 146
- DEPARE Depth area 131
- COALNE Coastline 73
- SBDARE Seabed area 51
- SLCONS Shoreline construction 50
- RIVERS River 33
- LNDRGN Land region 26
- M_QUAL Data quality 21
- SOUNDG Sounding 16
- OBSTRN Obstruction 13
- LNDMRK 10
- BUAARE 7
- LNDELV 7
- LAKARE 6
- LIGHTS Light 6
- LNDARE Land area 6
- SEAARE Sea area 6
- BRIDGE 5
- BCNSPP Special purpose beacon 4
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/US4AK4VK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4VK/3.0/US4AK4VK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4VK/3.0/US4AK4VK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4VK/3.0/US4AK4VK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4VK/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Sep 29, 2025 | metadata.json |