NOAA S-57 chart cell
Alaska
US4AK7MI
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 487
- S-57 layers
- 27
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 71.10000° N
- South
- 70.80000° N
- West
- 159.60000° W
- East
- 158.40000° W
- Center
- 70.95000° N, 159.00000° W
- Bounds area
- 424 sq nm
- Feature density
- 1.1497 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 18
- Smallest layer
- 1
- Largest layer
- 72
- Area sq km
- 1,453
- Features per sq km
- 0.33521
- LAKARE 72
- LNDARE Land area 61
- SBDARE Seabed area 54
- DEPARE Depth area 52
- DEPCNT Depth contour 46
- COALNE Coastline 44
- SLOTOP 32
- RIVERS River 27
- LNDRGN Land region 25
- TESARE 14
- M_QUAL Data quality 13
- OBSTRN Obstruction 12
- SOUNDG Sounding 6
- SEAARE Sea area 5
- CTNARE Caution area 4
- MAGVAR Magnetic variation 4
- CONZNE 2
- COSARE 2
- EXEZNE 2
- LNDMRK 2
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/US4AK7MI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7MI/4.0/US4AK7MI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7MI/4.0/US4AK7MI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7MI/4.0/US4AK7MI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7MI/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 27, 2026 | metadata.json |