NOAA S-57 chart cell
Unimak Pass and Vicinity
US4AK3JK
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 278
- S-57 layers
- 21
- Published
- Aug 7, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.60000° N
- South
- 54.30000° N
- West
- 165.60000° W
- East
- 165.00000° W
- Center
- 54.45000° N, 165.30000° W
- Bounds area
- 377 sq nm
- Feature density
- 0.7369 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.2
- Smallest layer
- 1
- Largest layer
- 93
- Area sq km
- 1,294
- Features per sq km
- 0.21484
- DEPARE Depth area 93
- DEPCNT Depth contour 91
- SBDARE Seabed area 40
- M_QUAL Data quality 19
- SOUNDG Sounding 8
- SEAARE Sea area 4
- WATTUR 4
- MAGVAR Magnetic variation 3
- ADMARE 2
- FAIRWY Fairway 2
- RESARE 2
- CBLSUB 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- SNDWAV 1
- TESARE 1
- UWTROC Underwater rock 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/US4AK3JK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3JK/1.0/US4AK3JK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3JK/1.0/US4AK3JK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3JK/1.0/US4AK3JK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3JK/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 7, 2024 | metadata.json |