NOAA S-57 chart cell
Norton Sound, Alaska
US4AK6OV
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 56
- S-57 layers
- 20
- Published
- Sep 5, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 63.90000° N
- South
- 63.60000° N
- West
- 161.40000° W
- East
- 160.80000° W
- Center
- 63.75000° N, 161.10000° W
- Bounds area
- 287 sq nm
- Feature density
- 0.1951 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 2.8
- Smallest layer
- 1
- Largest layer
- 8
- Area sq km
- 984
- Features per sq km
- 0.05689
- DEPARE Depth area 8
- DEPCNT Depth contour 6
- M_QUAL Data quality 6
- RIVERS River 5
- SBDARE Seabed area 5
- SOUNDG Sounding 5
- MAGVAR Magnetic variation 4
- COALNE Coastline 2
- LNDARE Land area 2
- LNDRGN Land region 2
- M_NPUB 2
- ADMARE 1
- CONZNE 1
- CTNARE Caution area 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- SEAARE Sea area 1
- TESARE 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/US4AK6OV.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6OV/1.1/US4AK6OV.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6OV/1.1/US4AK6OV.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6OV/1.1/US4AK6OV.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6OV/1.1/US4AK6OV.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6OV/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Sep 5, 2025 | metadata.json |