NOAA S-57 chart cell
Cook Inlet and Kalgin Island
US4AK4SG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 786
- S-57 layers
- 29
- Published
- Apr 1, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.60000° N
- South
- 60.30000° N
- West
- 152.40000° W
- East
- 151.80000° W
- Center
- 60.45000° N, 152.10000° W
- Bounds area
- 320 sq nm
- Feature density
- 2.4561 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 27.1
- Smallest layer
- 1
- Largest layer
- 374
- Area sq km
- 1,098
- Features per sq km
- 0.7161
- UWTROC Underwater rock 374
- DEPCNT Depth contour 119
- DEPARE Depth area 98
- RIVERS River 55
- SBDARE Seabed area 38
- OBSTRN Obstruction 18
- LNDARE Land area 14
- COALNE Coastline 13
- SEAARE Sea area 7
- LNDELV 6
- LNDRGN Land region 6
- M_QUAL Data quality 6
- LIGHTS Light 5
- SOUNDG Sounding 4
- BCNSPP Special purpose beacon 3
- DAYMAR 3
- MORFAC 3
- MAGVAR Magnetic variation 2
- TESARE 2
- ADMARE 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/US4AK4SG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4SG/1.0/US4AK4SG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4SG/1.0/US4AK4SG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4SG/1.0/US4AK4SG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4SG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 1, 2024 | metadata.json |