NOAA S-57 chart cell
Alaska
US4AK7MM
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 429
- S-57 layers
- 28
- Published
- Jun 18, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 71.10000° N
- South
- 70.80000° N
- West
- 154.80000° W
- East
- 153.60000° W
- Center
- 70.95000° N, 154.20000° W
- Bounds area
- 424 sq nm
- Feature density
- 1.0128 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 15.3
- Smallest layer
- 1
- Largest layer
- 93
- Area sq km
- 1,453
- Features per sq km
- 0.29529
- LAKARE 93
- COALNE Coastline 88
- SLOTOP 42
- SBDARE Seabed area 41
- LNDRGN Land region 36
- DEPCNT Depth contour 25
- DEPARE Depth area 24
- LNDARE Land area 24
- RIVERS River 12
- M_QUAL Data quality 10
- SOUNDG Sounding 6
- SLOGRD 5
- MAGVAR Magnetic variation 4
- SEAARE Sea area 4
- TESARE 2
- ADMARE 1
- BUISGL 1
- CONZNE 1
- COSARE 1
- CTNARE Caution 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/US4AK7MM.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7MM/3.0/US4AK7MM.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7MM/3.0/US4AK7MM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7MM/3.0/US4AK7MM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7MM/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 18, 2026 | metadata.json |