NOAA S-57 chart cell
Alaska
US4AK7HE
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 88
- S-57 layers
- 19
- Published
- Jun 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 69.60000° N
- South
- 69.30000° N
- West
- 164.40000° W
- East
- 163.20000° W
- Center
- 69.45000° N, 163.80000° W
- Bounds area
- 456 sq nm
- Feature density
- 0.1932 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 4.6
- Smallest layer
- 1
- Largest layer
- 23
- Area sq km
- 1,562
- Features per sq km
- 0.05632
- DEPARE Depth area 23
- DEPCNT Depth contour 21
- LAKARE 9
- SBDARE Seabed area 6
- COALNE Coastline 4
- M_QUAL Data quality 4
- SOUNDG Sounding 4
- LNDARE Land area 3
- SEAARE Sea area 3
- M_NPUB 2
- CONZNE 1
- COSARE 1
- CTNARE Caution area 1
- CTRPNT 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- MAGVAR Magnetic variation 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/US4AK7HE.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7HE/3.0/US4AK7HE.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7HE/3.0/US4AK7HE.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7HE/3.0/US4AK7HE.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7HE/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 17, 2026 | metadata.json |