NOAA S-57 chart cell
Cook Inlet
US4AK4RG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 276
- S-57 layers
- 25
- Published
- Apr 1, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.30000° N
- South
- 60.00000° N
- West
- 152.40000° W
- East
- 151.80000° W
- Center
- 60.15000° N, 152.10000° W
- Bounds area
- 323 sq nm
- Feature density
- 0.8546 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11
- Smallest layer
- 1
- Largest layer
- 106
- Area sq km
- 1,108
- Features per sq km
- 0.24916
- DEPARE Depth area 106
- DEPCNT Depth contour 105
- SBDARE Seabed area 30
- UWTROC Underwater rock 6
- ADMARE 3
- SOUNDG Sounding 3
- CTNARE Caution area 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- TESARE 2
- BOYLAT Lateral buoy 1
- CBLSUB 1
- COALNE Coastline 1
- CONZNE 1
- EXEZNE 1
- FOGSIG 1
- LIGHTS Light 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 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/US4AK4RG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4RG/1.0/US4AK4RG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4RG/1.0/US4AK4RG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4RG/1.0/US4AK4RG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4RG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 1, 2024 | metadata.json |