NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2CF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 2,605
- S-57 layers
- 44
- Published
- Aug 15, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 51.90000° N
- South
- 51.60000° N
- West
- 177.00000° W
- East
- 176.40000° W
- Center
- 51.75000° N, 176.70000° W
- Bounds area
- 402 sq nm
- Feature density
- 6.4847 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 59.2
- Smallest layer
- 1
- Largest layer
- 678
- Area sq km
- 1,378
- Features per sq km
- 1.89064
- LNDARE Land area 678
- COALNE Coastline 422
- DEPCNT Depth contour 339
- DEPARE Depth area 302
- UWTROC Underwater rock 283
- SBDARE Seabed area 195
- RIVERS River 75
- WEDKLP 68
- LNDELV 42
- OBSTRN Obstruction 36
- SEAARE Sea area 32
- LNDRGN Land region 20
- SLCONS Shoreline construction 15
- SOUNDG Sounding 12
- LIGHTS Light 8
- M_QUAL Data quality 8
- SLOTOP 7
- DAYMAR 6
- BUISGL 5
- ADMARE 4
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/US4AK2CF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2CF/1.0/US4AK2CF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2CF/1.0/US4AK2CF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2CF/1.0/US4AK2CF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2CF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 15, 2025 | metadata.json |