NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2CD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 3,735
- S-57 layers
- 30
- Published
- Feb 1, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 51.90000° N
- South
- 51.60000° N
- West
- 178.20000° W
- East
- 177.60000° W
- Center
- 51.75000° N, 177.90000° W
- Bounds area
- 402 sq nm
- Feature density
- 9.2976 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 124.5
- Smallest layer
- 1
- Largest layer
- 1,312
- Area sq km
- 1,378
- Features per sq km
- 2.71076
- LNDARE Land area 1,312
- UWTROC Underwater rock 693
- DEPCNT Depth contour 454
- DEPARE Depth area 452
- SBDARE Seabed area 272
- COALNE Coastline 104
- WEDKLP 102
- LNDELV 80
- RIVERS River 78
- OBSTRN Obstruction 73
- SEAARE Sea area 30
- LNDRGN Land region 23
- WATTUR 13
- M_QUAL Data quality 11
- BUISGL 7
- LNDMRK 6
- SOUNDG Sounding 6
- BUAARE 3
- MAGVAR Magnetic variation 3
- BCNSPP Special purpose beacon 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/US4AK2CD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2CD/1.0/US4AK2CD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2CD/1.0/US4AK2CD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2CD/1.0/US4AK2CD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2CD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Feb 1, 2024 | metadata.json |