NOAA S-57 chart cell
Amukta Pass to Unalaska Island, AK
US4AK3ED
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 757
- S-57 layers
- 26
- Published
- Jan 24, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 53.10000° N
- South
- 52.80000° N
- West
- 169.80000° W
- East
- 169.20000° W
- Center
- 52.95000° N, 169.50000° W
- Bounds area
- 391 sq nm
- Feature density
- 1.9363 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 29.1
- Smallest layer
- 1
- Largest layer
- 179
- Area sq km
- 1,341
- Features per sq km
- 0.56453
- DEPCNT Depth contour 179
- DEPARE Depth area 173
- WEDKLP 123
- LNDARE Land area 70
- UWTROC Underwater rock 47
- COALNE Coastline 40
- LNDELV 27
- SBDARE Seabed area 25
- RIVERS River 18
- SOUNDG Sounding 9
- SEAARE Sea area 8
- OBSTRN Obstruction 7
- WATTUR 6
- M_QUAL Data quality 5
- SLOTOP 4
- LNDMRK 3
- LNDRGN Land region 3
- MAGVAR Magnetic variation 2
- ADMARE 1
- CONZNE 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/US4AK3ED.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3ED/1.0/US4AK3ED.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3ED/1.0/US4AK3ED.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3ED/1.0/US4AK3ED.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3ED/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 24, 2024 | metadata.json |