NOAA S-57 chart cell
Alaska
US4AK5OJ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 4,844
- S-57 layers
- 42
- Published
- Mar 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.60000° N
- South
- 57.30000° N
- West
- 135.00000° W
- East
- 134.40000° W
- Center
- 57.45000° N, 134.70000° W
- Bounds area
- 349 sq nm
- Feature density
- 13.875 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 115.3
- Smallest layer
- 1
- Largest layer
- 1,283
- Area sq km
- 1,197
- Features per sq km
- 4.04529
- UWTROC Underwater rock 1,283
- DEPCNT Depth contour 900
- DEPARE Depth area 758
- SBDARE Seabed area 755
- LNDARE Land area 249
- COALNE Coastline 248
- WEDKLP 165
- OBSTRN Obstruction 151
- RIVERS River 64
- LNDRGN Land region 41
- SLCONS Shoreline construction 30
- M_QUAL Data quality 29
- SEAARE Sea area 26
- LIGHTS Light 14
- BUISGL 11
- SLOGRD 11
- SOUNDG Sounding 11
- DAYMAR 10
- CBLSUB 9
- LNDELV 8
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/US4AK5OJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5OJ/1.0/US4AK5OJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5OJ/1.0/US4AK5OJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5OJ/1.0/US4AK5OJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5OJ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 19, 2025 | metadata.json |