NOAA S-57 chart cell
Alaska
US4AK7MH
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 50
- S-57 layers
- 18
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 71.10000° N
- South
- 70.80000° N
- West
- 160.80000° W
- East
- 159.60000° W
- Center
- 70.95000° N, 160.20000° W
- Bounds area
- 424 sq nm
- Feature density
- 0.118 / sq nm
Chart Statistics
18 largest layers shown
- Average features per layer
- 2.8
- Smallest layer
- 1
- Largest layer
- 13
- Area sq km
- 1,453
- Features per sq km
- 0.03442
- DEPARE Depth area 13
- DEPCNT Depth contour 7
- M_QUAL Data quality 4
- MAGVAR Magnetic variation 4
- SOUNDG Sounding 4
- CBLSUB 3
- LAKARE 2
- LNDARE Land area 2
- M_NPUB 2
- COALNE Coastline 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- SBDARE Seabed area 1
- SEAARE Sea area 1
- TESARE 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/US4AK7MH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7MH/4.0/US4AK7MH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7MH/4.0/US4AK7MH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7MH/4.0/US4AK7MH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7MH/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 27, 2026 | metadata.json |