NOAA S-57 chart cell
Andreanof Islands, AK
US4AK2DH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 3,265
- S-57 layers
- 23
- Published
- Aug 14, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.20000° N
- South
- 51.90000° N
- West
- 175.80000° W
- East
- 175.20000° W
- Center
- 52.05000° N, 175.50000° W
- Bounds area
- 399 sq nm
- Feature density
- 8.1821 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 142
- Smallest layer
- 1
- Largest layer
- 795
- Area sq km
- 1,369
- Features per sq km
- 2.38552
- LNDARE Land area 795
- COALNE Coastline 662
- UWTROC Underwater rock 477
- DEPCNT Depth contour 431
- DEPARE Depth area 383
- SBDARE Seabed area 212
- LNDRGN Land region 88
- WEDKLP 64
- OBSTRN Obstruction 42
- LNDELV 32
- WATTUR 17
- RIVERS River 16
- SOUNDG Sounding 12
- MAGVAR Magnetic variation 10
- SEAARE Sea area 8
- ADMARE 4
- CTNARE Caution area 3
- M_QUAL Data quality 3
- M_NPUB 2
- CTRPNT 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/US4AK2DH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK2DH/1.0/US4AK2DH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK2DH/1.0/US4AK2DH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK2DH/1.0/US4AK2DH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK2DH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 14, 2025 | metadata.json |