NOAA S-57 chart cell
Alaska
US4AK7KU
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 34
- S-57 layers
- 13
- Published
- May 21, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.50000° N
- South
- 70.20000° N
- West
- 145.20000° W
- East
- 144.00000° W
- Center
- 70.35000° N, 144.60000° W
- Bounds area
- 436 sq nm
- Feature density
- 0.0779 / sq nm
Chart Statistics
13 largest layers shown
- Average features per layer
- 2.6
- Smallest layer
- 1
- Largest layer
- 7
- Area sq km
- 1,497
- Features per sq km
- 0.02272
- M_QUAL Data quality 7
- SOUNDG Sounding 7
- DEPARE Depth area 4
- MAGVAR Magnetic variation 4
- DEPCNT Depth contour 3
- M_NPUB 2
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 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/US4AK7KU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7KU/3.0/US4AK7KU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7KU/3.0/US4AK7KU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7KU/3.0/US4AK7KU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7KU/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 21, 2026 | metadata.json |