NOAA S-57 chart cell
Alaska
US4AK3SW
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 14
- S-57 layers
- 10
- Published
- Apr 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.30000° N
- South
- 57.00000° N
- West
- 158.40000° W
- East
- 157.80000° W
- Center
- 57.15000° N, 158.10000° W
- Bounds area
- 352 sq nm
- Feature density
- 0.0398 / sq nm
Chart Statistics
10 largest layers shown
- Average features per layer
- 1.4
- Smallest layer
- 1
- Largest layer
- 2
- Area sq km
- 1,207
- Features per sq km
- 0.0116
- COALNE Coastline 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- RIVERS River 2
- DEPARE Depth area 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4AK3SW.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3SW/1.0/US4AK3SW.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3SW/1.0/US4AK3SW.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3SW/1.0/US4AK3SW.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3SW/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 25, 2024 | metadata.json |