NOAA S-57 chart cell
Alaska
US4AK7MJ
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 598
- S-57 layers
- 24
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 71.10000° N
- South
- 70.80000° N
- West
- 158.40000° W
- East
- 157.20000° W
- Center
- 70.95000° N, 157.80000° W
- Bounds area
- 424 sq nm
- Feature density
- 1.4118 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 24.9
- Smallest layer
- 1
- Largest layer
- 272
- Area sq km
- 1,453
- Features per sq km
- 0.41161
- LAKARE 272
- COALNE Coastline 93
- DEPARE Depth area 43
- RIVERS River 42
- LNDRGN Land region 38
- DEPCNT Depth contour 37
- SLOTOP 31
- SBDARE Seabed area 11
- M_QUAL Data quality 6
- BUISGL 4
- OBSTRN Obstruction 4
- SOUNDG Sounding 3
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- AIRARE 1
- BUAARE 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- LNDARE Land 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/US4AK7MJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7MJ/4.0/US4AK7MJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7MJ/4.0/US4AK7MJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7MJ/4.0/US4AK7MJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7MJ/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 27, 2026 | metadata.json |