NOAA S-57 chart cell
Unimak Pass and Vicinity
US4AK3IM
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 48
- S-57 layers
- 15
- Published
- Aug 7, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.30000° N
- South
- 54.00000° N
- West
- 164.40000° W
- East
- 163.80000° W
- Center
- 54.15000° N, 164.10000° W
- Bounds area
- 380 sq nm
- Feature density
- 0.1263 / sq nm
Chart Statistics
15 largest layers shown
- Average features per layer
- 3.2
- Smallest layer
- 1
- Largest layer
- 11
- Area sq km
- 1,303
- Features per sq km
- 0.03683
- SBDARE Seabed area 11
- DEPARE Depth area 9
- DEPCNT Depth contour 8
- M_QUAL Data quality 5
- SEAARE Sea area 3
- RESARE 2
- SOUNDG Sounding 2
- CONZNE 1
- EXEZNE 1
- FAIRWY Fairway 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- TESARE 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/US4AK3IM.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3IM/1.0/US4AK3IM.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3IM/1.0/US4AK3IM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3IM/1.0/US4AK3IM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3IM/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 7, 2024 | metadata.json |