NOAA S-57 chart cell
Amukta Pass to Unalaska Island, AK
US4AK3DE
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 122
- S-57 layers
- 17
- Published
- Jan 24, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.80000° N
- South
- 52.50000° N
- West
- 169.20000° W
- East
- 168.60000° W
- Center
- 52.65000° N, 168.90000° W
- Bounds area
- 394 sq nm
- Feature density
- 0.3099 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 7.2
- Smallest layer
- 1
- Largest layer
- 40
- Area sq km
- 1,350
- Features per sq km
- 0.09036
- DEPCNT Depth contour 40
- DEPARE Depth area 39
- SBDARE Seabed area 9
- COALNE Coastline 6
- M_QUAL Data quality 6
- UWTROC Underwater rock 6
- LNDARE Land area 5
- SEAARE Sea area 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- RESARE 1
- SOUNDG Sounding 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/US4AK3DE.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3DE/1.0/US4AK3DE.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3DE/1.0/US4AK3DE.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3DE/1.0/US4AK3DE.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3DE/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 24, 2024 | metadata.json |