NOAA S-57 chart cell
Alaska
US4AK6MF
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 17
- S-57 layers
- 13
- Published
- May 27, 2021
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 63.30000° N
- South
- 63.00000° N
- West
- 171.00000° W
- East
- 170.40000° W
- Center
- 63.15000° N, 170.70000° W
- Bounds area
- 293 sq nm
- Feature density
- 0.058 / sq nm
Chart Statistics
13 largest layers shown
- Average features per layer
- 1.3
- Smallest layer
- 1
- Largest layer
- 3
- Area sq km
- 1,005
- Features per sq km
- 0.01691
- DEPARE Depth area 3
- DEPCNT Depth contour 2
- M_QUAL Data quality 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- RESARE 1
- SEAARE Sea area 1
- SOUNDG Sounding 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/US4AK6MF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6MF/1.1/US4AK6MF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6MF/1.1/US4AK6MF.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6MF/1.1/US4AK6MF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6MF/1.1/US4AK6MF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6MF/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 27, 2021 | metadata.json |