NOAA S-57 chart cell
Alaska
US4AK6YR
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 63
- S-57 layers
- 17
- Published
- Sep 17, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 66.90000° N
- South
- 66.60000° N
- West
- 163.80000° W
- East
- 163.20000° W
- Center
- 66.75000° N, 163.50000° W
- Bounds area
- 256 sq nm
- Feature density
- 0.246 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 3.7
- Smallest layer
- 1
- Largest layer
- 15
- Area sq km
- 879
- Features per sq km
- 0.07171
- M_QUAL Data quality 15
- SBDARE Seabed area 13
- SOUNDG Sounding 8
- DEPARE Depth area 6
- DEPCNT Depth contour 5
- M_NPUB 2
- OBSTRN Obstruction 2
- SEAARE Sea area 2
- TESARE 2
- ADMARE 1
- CBLSUB 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- PILBOP 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/US4AK6YR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6YR/2.0/US4AK6YR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6YR/2.0/US4AK6YR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6YR/2.0/US4AK6YR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6YR/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Sep 17, 2024 | metadata.json |