NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2EI
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 143
- S-57 layers
- 21
- Published
- Aug 14, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.50000° N
- South
- 52.20000° N
- West
- 175.20000° W
- East
- 174.60000° W
- Center
- 52.35000° N, 174.90000° W
- Bounds area
- 396 sq nm
- Feature density
- 0.3608 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.8
- Smallest layer
- 1
- Largest layer
- 49
- Area sq km
- 1,359
- Features per sq km
- 0.10519
- DEPCNT Depth contour 49
- DEPARE Depth area 43
- SBDARE Seabed area 8
- UWTROC Underwater rock 8
- SOUNDG Sounding 6
- M_QUAL Data quality 5
- MAGVAR Magnetic variation 3
- WEDKLP 3
- ADMARE 2
- COALNE Coastline 2
- LNDARE Land area 2
- LNDELV 2
- M_NPUB 2
- CONZNE 1
- EXEZNE 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NSYS 1
- RESARE 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/US4AK2EI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2EI/1.0/US4AK2EI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2EI/1.0/US4AK2EI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2EI/1.0/US4AK2EI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2EI/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 14, 2025 | metadata.json |