NOAA S-57 chart cell
Cook Inlet and Kachemak Bay
US4AK4OG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 941
- S-57 layers
- 41
- Published
- Apr 2, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.40000° N
- South
- 59.10000° N
- West
- 152.40000° W
- East
- 151.80000° W
- Center
- 59.25000° N, 152.10000° W
- Bounds area
- 332 sq nm
- Feature density
- 2.8363 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 23
- Smallest layer
- 1
- Largest layer
- 233
- Area sq km
- 1,138
- Features per sq km
- 0.82694
- UWTROC Underwater rock 233
- DEPCNT Depth contour 155
- DEPARE Depth area 141
- SBDARE Seabed area 97
- LNDELV 44
- RIVERS River 42
- LNDARE Land area 41
- COALNE Coastline 40
- OBSTRN Obstruction 25
- SEAARE Sea area 15
- SLOTOP 11
- LNDRGN Land region 10
- M_QUAL Data quality 9
- SOUNDG Sounding 9
- WRECKS Wreck 7
- DAYMAR 6
- LNDMRK 6
- CBLSUB 5
- WATTUR 4
- BCNLAT Lateral beacon 3
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/US4AK4OG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4OG/1.0/US4AK4OG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4OG/1.0/US4AK4OG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4OG/1.0/US4AK4OG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4OG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 2, 2024 | metadata.json |