NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2BG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 58
- S-57 layers
- 14
- Published
- Aug 15, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 51.60000° N
- South
- 51.30000° N
- West
- 176.40000° W
- East
- 175.80000° W
- Center
- 51.45000° N, 176.10000° W
- Bounds area
- 404 sq nm
- Feature density
- 0.1434 / sq nm
Chart Statistics
14 largest layers shown
- Average features per layer
- 4.1
- Smallest layer
- 1
- Largest layer
- 20
- Area sq km
- 1,387
- Features per sq km
- 0.04182
- DEPARE Depth area 20
- DEPCNT Depth contour 20
- M_QUAL Data quality 4
- SOUNDG Sounding 4
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- RESARE 1
- SBDARE Seabed area 1
- SEAARE Sea area 1
- TESARE 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/US4AK2BG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2BG/1.0/US4AK2BG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2BG/1.0/US4AK2BG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2BG/1.0/US4AK2BG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2BG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 15, 2025 | metadata.json |