NOAA S-57 chart cell
Alaska
US4AK6RT
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 56
- S-57 layers
- 21
- Published
- Jun 23, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 64.80000° N
- South
- 64.50000° N
- West
- 162.60000° W
- East
- 162.00000° W
- Center
- 64.65000° N, 162.30000° W
- Bounds area
- 278 sq nm
- Feature density
- 0.2016 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 2.7
- Smallest layer
- 1
- Largest layer
- 9
- Area sq km
- 953
- Features per sq km
- 0.05877
- COALNE Coastline 9
- DEPARE Depth area 5
- LNDRGN Land region 5
- RIVERS River 5
- DEPCNT Depth contour 4
- LAKARE 4
- LNDARE Land area 3
- SBDARE Seabed area 3
- BUAARE 2
- M_NPUB 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- BUISGL 1
- CTNARE Caution area 1
- LNDELV 1
- LNDMRK 1
- M_COVR Coverage 1
- M_NSYS 1
- RDOSTA 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/US4AK6RT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6RT/1.0/US4AK6RT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6RT/1.0/US4AK6RT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6RT/1.0/US4AK6RT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6RT/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jun 23, 2023 | metadata.json |