NOAA S-57 chart cell
Cook Inlet and Iliamna Bay
US4AK4PD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 610
- S-57 layers
- 25
- Published
- Jul 16, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.70000° N
- South
- 59.40000° N
- West
- 154.20000° W
- East
- 153.60000° W
- Center
- 59.55000° N, 153.90000° W
- Bounds area
- 329 sq nm
- Feature density
- 1.855 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 24.4
- Smallest layer
- 1
- Largest layer
- 211
- Area sq km
- 1,128
- Features per sq km
- 0.54083
- UWTROC Underwater rock 211
- DEPCNT Depth contour 79
- DEPARE Depth area 67
- COALNE Coastline 41
- LNDELV 39
- LNDARE Land area 38
- RIVERS River 38
- SBDARE Seabed area 36
- OBSTRN Obstruction 13
- LNDRGN Land region 10
- SEAARE Sea area 7
- ICEARE 6
- M_QUAL Data quality 5
- SOUNDG Sounding 4
- BUISGL 3
- BUAARE 2
- MAGVAR Magnetic variation 2
- TESARE 2
- CBLSUB 1
- LAKARE 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/US4AK4PD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4PD/1.0/US4AK4PD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4PD/1.0/US4AK4PD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4PD/1.0/US4AK4PD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4PD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 16, 2025 | metadata.json |