NOAA S-57 chart cell
Alaska
US4AK3NV
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 102
- S-57 layers
- 23
- Published
- Jun 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.80000° N
- South
- 55.50000° N
- West
- 159.00000° W
- East
- 158.40000° W
- Center
- 55.65000° N, 158.70000° W
- Bounds area
- 366 sq nm
- Feature density
- 0.2786 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4.4
- Smallest layer
- 1
- Largest layer
- 21
- Area sq km
- 1,256
- Features per sq km
- 0.08122
- SBDARE Seabed area 21
- DEPCNT Depth contour 11
- DEPARE Depth area 10
- LNDARE Land area 10
- M_QUAL Data quality 9
- UWTROC Underwater rock 9
- SOUNDG Sounding 5
- COALNE Coastline 4
- M_NSYS 3
- OBSTRN Obstruction 3
- CBLSUB 2
- M_NPUB 2
- MAGVAR Magnetic variation 2
- WEDKLP 2
- ADMARE 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- LNDELV 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/US4AK3NV.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3NV/2.0/US4AK3NV.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3NV/2.0/US4AK3NV.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3NV/2.0/US4AK3NV.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3NV/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 5, 2026 | metadata.json |