NOAA S-57 chart cell
Alaska
US4AK3LU
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,204
- S-57 layers
- 27
- Published
- Jun 2, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.20000° N
- South
- 54.90000° N
- West
- 159.60000° W
- East
- 159.00000° W
- Center
- 55.05000° N, 159.30000° W
- Bounds area
- 372 sq nm
- Feature density
- 3.239 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 44.6
- Smallest layer
- 1
- Largest layer
- 253
- Area sq km
- 1,275
- Features per sq km
- 0.94435
- DEPARE Depth area 253
- DEPCNT Depth contour 249
- SBDARE Seabed area 159
- UWTROC Underwater rock 110
- WEDKLP 82
- OBSTRN Obstruction 64
- LNDARE Land area 61
- COALNE Coastline 48
- M_QUAL Data quality 44
- RIVERS River 34
- LNDELV 30
- LAKARE 19
- SEAARE Sea area 18
- SOUNDG Sounding 17
- SLOGRD 3
- ADMARE 2
- ACHARE Anchorage area 1
- CONZNE 1
- COSARE 1
- EXEZNE 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/US4AK3LU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3LU/2.0/US4AK3LU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3LU/2.0/US4AK3LU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3LU/2.0/US4AK3LU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3LU/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 2, 2026 | metadata.json |