NOAA S-57 chart cell
Alaska
US4AK3MU
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 343
- S-57 layers
- 26
- Published
- Jun 2, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.50000° N
- South
- 55.20000° N
- West
- 159.60000° W
- East
- 159.00000° W
- Center
- 55.35000° N, 159.30000° W
- Bounds area
- 369 sq nm
- Feature density
- 0.9297 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.2
- Smallest layer
- 1
- Largest layer
- 75
- Area sq km
- 1,265
- Features per sq km
- 0.27106
- COALNE Coastline 75
- LNDARE Land area 66
- SBDARE Seabed area 58
- DEPCNT Depth contour 32
- DEPARE Depth area 27
- UWTROC Underwater rock 22
- M_QUAL Data quality 11
- SOUNDG Sounding 8
- OBSTRN Obstruction 7
- RIVERS River 6
- LNDELV 5
- WEDKLP 5
- LNDRGN Land region 3
- MAGVAR Magnetic variation 3
- LAKARE 2
- M_NPUB 2
- SEAARE Sea area 2
- ADMARE 1
- CBLSUB 1
- CONZNE 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/US4AK3MU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3MU/2.0/US4AK3MU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3MU/2.0/US4AK3MU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3MU/2.0/US4AK3MU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3MU/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 2, 2026 | metadata.json |