NOAA S-57 chart cell
Alaska
US4AK6RO
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 221
- S-57 layers
- 32
- Published
- Oct 4, 2022
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 64.80000° N
- South
- 64.50000° N
- West
- 165.60000° W
- East
- 165.00000° W
- Center
- 64.65000° N, 165.30000° W
- Bounds area
- 278 sq nm
- Feature density
- 0.7955 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.9
- Smallest layer
- 1
- Largest layer
- 65
- Area sq km
- 953
- Features per sq km
- 0.23193
- BUISGL 65
- SLOTOP 29
- RIVERS River 22
- SLCONS Shoreline construction 16
- COALNE Coastline 13
- DEPARE Depth area 13
- DEPCNT Depth contour 10
- M_QUAL Data quality 6
- LNDRGN Land region 4
- MAGVAR Magnetic variation 4
- CBLOHD 3
- LIGHTS Light 3
- LNDARE Land area 3
- LNDMRK 3
- SOUNDG Sounding 3
- AIRARE 2
- BCNSPP Special purpose beacon 2
- DAYMAR 2
- LNDELV 2
- M_NPUB 2
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/US4AK6RO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6RO/1.0/US4AK6RO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6RO/1.0/US4AK6RO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6RO/1.0/US4AK6RO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6RO/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Oct 4, 2022 | metadata.json |