NOAA S-57 chart cell
Alaska
US4AK6NH
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 47
- S-57 layers
- 19
- Published
- May 24, 2021
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 63.60000° N
- South
- 63.30000° N
- West
- 169.80000° W
- East
- 169.20000° W
- Center
- 63.45000° N, 169.50000° W
- Bounds area
- 290 sq nm
- Feature density
- 0.1621 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 2.5
- Smallest layer
- 1
- Largest layer
- 8
- Area sq km
- 995
- Features per sq km
- 0.04725
- RIVERS River 8
- COALNE Coastline 5
- DEPARE Depth area 5
- DEPCNT Depth contour 4
- LNDRGN Land region 4
- MAGVAR Magnetic variation 3
- LAKARE 2
- LNDELV 2
- M_QUAL Data quality 2
- SEAARE Sea area 2
- SOUNDG Sounding 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- RESARE 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/US4AK6NH.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6NH/1.1/US4AK6NH.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6NH/1.1/US4AK6NH.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6NH/1.1/US4AK6NH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6NH/1.1/US4AK6NH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6NH/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 24, 2021 | metadata.json |