NOAA S-57 chart cell
Approaches to Cook Inlet and Shelikof Strait
US4AK4MG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,258
- S-57 layers
- 26
- Published
- Jul 1, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 58.80000° N
- South
- 58.50000° N
- West
- 152.40000° W
- East
- 151.80000° W
- Center
- 58.65000° N, 152.10000° W
- Bounds area
- 338 sq nm
- Feature density
- 3.7264 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 48.4
- Smallest layer
- 1
- Largest layer
- 299
- Area sq km
- 1,158
- Features per sq km
- 1.08646
- DEPARE Depth area 299
- DEPCNT Depth contour 293
- UWTROC Underwater rock 185
- SBDARE Seabed area 138
- LNDARE Land area 116
- WEDKLP 85
- COALNE Coastline 49
- OBSTRN Obstruction 40
- LNDELV 17
- M_QUAL Data quality 5
- SEAARE Sea area 5
- SOUNDG Sounding 5
- MAGVAR Magnetic variation 3
- BUISGL 2
- LNDRGN Land region 2
- RIVERS River 2
- VEGATN 2
- WATTUR 2
- ADMARE 1
- CBLSUB 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/US4AK4MG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4MG/1.0/US4AK4MG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4MG/1.0/US4AK4MG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4MG/1.0/US4AK4MG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4MG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 1, 2025 | metadata.json |