NOAA S-57 chart cell
Alaska
US4AK6YS
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 144
- S-57 layers
- 29
- Published
- May 12, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 66.90000° N
- South
- 66.60000° N
- West
- 163.20000° W
- East
- 162.60000° W
- Center
- 66.75000° N, 162.90000° W
- Bounds area
- 256 sq nm
- Feature density
- 0.5622 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 5
- Smallest layer
- 1
- Largest layer
- 31
- Area sq km
- 879
- Features per sq km
- 0.16391
- SBDARE Seabed area 31
- M_QUAL Data quality 24
- DEPCNT Depth contour 23
- DEPARE Depth area 21
- SLOTOP 9
- BUISGL 4
- CBLSUB 3
- SOUNDG Sounding 3
- LNDMRK 2
- M_NPUB 2
- MAGVAR Magnetic variation 2
- TESARE 2
- UNSARE 2
- BUAARE 1
- COALNE Coastline 1
- CONZNE 1
- COSARE 1
- CTNARE Caution area 1
- EXEZNE 1
- LAKARE 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/US4AK6YS.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6YS/2.0/US4AK6YS.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6YS/2.0/US4AK6YS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6YS/2.0/US4AK6YS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6YS/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 12, 2026 | metadata.json |