NOAA S-57 chart cell
Alaska
US4AK6ZU
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 135
- S-57 layers
- 13
- Published
- Jun 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 67.20000° N
- South
- 66.90000° N
- West
- 162.00000° W
- East
- 161.40000° W
- Center
- 67.05000° N, 161.70000° W
- Bounds area
- 253 sq nm
- Feature density
- 0.5336 / sq nm
Chart Statistics
13 largest layers shown
- Average features per layer
- 10.4
- Smallest layer
- 1
- Largest layer
- 58
- Area sq km
- 868
- Features per sq km
- 0.15556
- RIVERS River 58
- COALNE Coastline 39
- LAKARE 16
- LNDARE Land area 9
- LNDRGN Land region 3
- M_NPUB 2
- MAGVAR Magnetic variation 2
- CTNARE Caution area 1
- DEPARE Depth area 1
- M_COVR Coverage 1
- M_NSYS 1
- M_QUAL Data quality 1
- SEAARE Sea area 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/US4AK6ZU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6ZU/2.0/US4AK6ZU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6ZU/2.0/US4AK6ZU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6ZU/2.0/US4AK6ZU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6ZU/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 3, 2026 | metadata.json |