NOAA S-57 chart cell
Alaska
US4AK7LJ
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 47
- S-57 layers
- 12
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.80000° N
- South
- 70.50000° N
- West
- 158.40000° W
- East
- 157.20000° W
- Center
- 70.65000° N, 157.80000° W
- Bounds area
- 430 sq nm
- Feature density
- 0.1093 / sq nm
Chart Statistics
12 largest layers shown
- Average features per layer
- 3.9
- Smallest layer
- 1
- Largest layer
- 30
- Area sq km
- 1,475
- Features per sq km
- 0.03187
- LAKARE 30
- LNDRGN Land region 7
- COALNE Coastline 1
- DEPARE Depth area 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- OBSTRN Obstruction 1
- SEAARE Sea area 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/US4AK7LJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7LJ/3.0/US4AK7LJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7LJ/3.0/US4AK7LJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7LJ/3.0/US4AK7LJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7LJ/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 27, 2026 | metadata.json |