NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2DF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 401
- S-57 layers
- 36
- Published
- Aug 14, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.20000° N
- South
- 51.90000° N
- West
- 177.00000° W
- East
- 176.40000° W
- Center
- 52.05000° N, 176.70000° W
- Bounds area
- 399 sq nm
- Feature density
- 1.0049 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.1
- Smallest layer
- 1
- Largest layer
- 69
- Area sq km
- 1,369
- Features per sq km
- 0.29298
- LNDARE Land area 69
- DEPARE Depth area 53
- DEPCNT Depth contour 53
- COALNE Coastline 42
- SBDARE Seabed area 42
- UWTROC Underwater rock 25
- RIVERS River 21
- WEDKLP 18
- OBSTRN Obstruction 9
- SEAARE Sea area 9
- M_QUAL Data quality 8
- SLCONS Shoreline construction 8
- SOUNDG Sounding 5
- MAGVAR Magnetic variation 4
- LNDELV 3
- LNDRGN Land region 3
- TESARE 3
- ADMARE 2
- CONZNE 2
- EXEZNE 2
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/US4AK2DF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2DF/1.0/US4AK2DF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2DF/1.0/US4AK2DF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2DF/1.0/US4AK2DF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2DF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 14, 2025 | metadata.json |