NOAA S-57 chart cell
Unimak Pass and Vicinity
US4AK3JL
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 365
- S-57 layers
- 34
- Published
- Aug 7, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.60000° N
- South
- 54.30000° N
- West
- 165.00000° W
- East
- 164.40000° W
- Center
- 54.45000° N, 164.70000° W
- Bounds area
- 377 sq nm
- Feature density
- 0.9675 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.7
- Smallest layer
- 1
- Largest layer
- 64
- Area sq km
- 1,294
- Features per sq km
- 0.28208
- DEPCNT Depth contour 64
- DEPARE Depth area 60
- UWTROC Underwater rock 39
- RIVERS River 34
- SBDARE Seabed area 33
- COALNE Coastline 30
- LNDELV 26
- OBSTRN Obstruction 7
- LNDRGN Land region 6
- M_QUAL Data quality 6
- SLOTOP 6
- WATTUR 6
- WEDKLP 5
- LNDARE Land area 4
- LNDMRK 4
- SEAARE Sea area 4
- SOUNDG Sounding 4
- SLOGRD 3
- BCNSPP Special purpose beacon 2
- DAYMAR 2
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/US4AK3JL.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3JL/1.0/US4AK3JL.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3JL/1.0/US4AK3JL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3JL/1.0/US4AK3JL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3JL/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 7, 2024 | metadata.json |