NOAA S-57 chart cell
Alaska
US4AK6OF
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 44
- S-57 layers
- 20
- Published
- May 4, 2021
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 63.90000° N
- South
- 63.60000° N
- West
- 171.00000° W
- East
- 170.40000° W
- Center
- 63.75000° N, 170.70000° W
- Bounds area
- 287 sq nm
- Feature density
- 0.1533 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 2.2
- Smallest layer
- 1
- Largest layer
- 8
- Area sq km
- 984
- Features per sq km
- 0.0447
- DEPARE Depth area 8
- DEPCNT Depth contour 7
- RIVERS River 6
- LNDRGN Land region 3
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- SOUNDG Sounding 2
- ADMARE 1
- COALNE Coastline 1
- CONZNE 1
- EXEZNE 1
- LNDARE Land area 1
- LNDELV 1
- LNDMRK 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- RESARE 1
- UWTROC Underwater rock 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/US4AK6OF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6OF/1.1/US4AK6OF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6OF/1.1/US4AK6OF.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6OF/1.1/US4AK6OF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6OF/1.1/US4AK6OF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6OF/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 4, 2021 | metadata.json |