NOAA S-57 chart cell
Alaska
US4AK7FC
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 167
- S-57 layers
- 25
- Published
- May 13, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 69.00000° N
- South
- 68.70000° N
- West
- 166.80000° W
- East
- 165.60000° W
- Center
- 68.85000° N, 166.20000° W
- Bounds area
- 468 sq nm
- Feature density
- 0.3567 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.7
- Smallest layer
- 1
- Largest layer
- 75
- Area sq km
- 1,606
- Features per sq km
- 0.10398
- LNDELV 75
- RIVERS River 20
- LAKARE 12
- LNDRGN Land region 11
- DEPCNT Depth contour 8
- DEPARE Depth area 7
- COALNE Coastline 5
- LNDARE Land area 4
- SOUNDG Sounding 4
- M_QUAL Data quality 3
- UWTROC Underwater rock 3
- SILTNK 2
- AIRARE 1
- BUAARE 1
- CONZNE 1
- COSARE 1
- CTNARE Caution area 1
- EXEZNE 1
- LNDMRK 1
- M_COVR Coverage 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/US4AK7FC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7FC/4.0/US4AK7FC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7FC/4.0/US4AK7FC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7FC/4.0/US4AK7FC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7FC/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 13, 2026 | metadata.json |