NOAA S-57 chart cell
Norton Sound, Alaska
US4AK6MT
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 27
- S-57 layers
- 12
- Published
- Sep 5, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 63.30000° N
- South
- 63.00000° N
- West
- 162.60000° W
- East
- 162.00000° W
- Center
- 63.15000° N, 162.30000° W
- Bounds area
- 293 sq nm
- Feature density
- 0.0921 / sq nm
Chart Statistics
12 largest layers shown
- Average features per layer
- 2.3
- Smallest layer
- 1
- Largest layer
- 14
- Area sq km
- 1,005
- Features per sq km
- 0.02686
- SLOGRD 14
- RIVERS River 3
- BUAARE 1
- COALNE Coastline 1
- DEPARE Depth area 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- SEAARE Sea area 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/US4AK6MT.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6MT/1.1/US4AK6MT.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6MT/1.1/US4AK6MT.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6MT/1.1/US4AK6MT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6MT/1.1/US4AK6MT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6MT/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Sep 5, 2025 | metadata.json |