NOAA S-57 chart cell
Alaska
US4AK7ML
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 267
- S-57 layers
- 17
- Published
- Jun 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 71.10000° N
- South
- 70.80000° N
- West
- 156.00000° W
- East
- 154.80000° W
- Center
- 70.95000° N, 155.40000° W
- Bounds area
- 424 sq nm
- Feature density
- 0.6303 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 15.7
- Smallest layer
- 1
- Largest layer
- 111
- Area sq km
- 1,453
- Features per sq km
- 0.18378
- COALNE Coastline 111
- SLOTOP 33
- LAKARE 32
- LNDRGN Land region 25
- RIVERS River 24
- LNDARE Land area 10
- DEPARE Depth area 8
- SEAARE Sea area 7
- M_QUAL Data quality 5
- DEPCNT Depth contour 3
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- CTNARE Caution area 1
- CTRPNT 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4AK7ML.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7ML/3.0/US4AK7ML.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7ML/3.0/US4AK7ML.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7ML/3.0/US4AK7ML.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7ML/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 17, 2026 | metadata.json |