NOAA S-57 chart cell
Alaska
US4AK3LT
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,815
- 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
- 160.20000° W
- East
- 159.60000° W
- Center
- 55.05000° N, 159.90000° W
- Bounds area
- 372 sq nm
- Feature density
- 4.8828 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 67.2
- Smallest layer
- 1
- Largest layer
- 287
- Area sq km
- 1,275
- Features per sq km
- 1.42359
- UWTROC Underwater rock 287
- DEPCNT Depth contour 265
- DEPARE Depth area 249
- SBDARE Seabed area 226
- LNDARE Land area 184
- WEDKLP 149
- RIVERS River 82
- LNDELV 74
- COALNE Coastline 70
- OBSTRN Obstruction 68
- M_QUAL Data quality 65
- LAKARE 35
- SOUNDG Sounding 24
- SEAARE Sea area 14
- LNDRGN Land region 6
- ADMARE 2
- SLOGRD 2
- TESARE 2
- UNSARE 2
- WATTUR 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/US4AK3LT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3LT/2.0/US4AK3LT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3LT/2.0/US4AK3LT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3LT/2.0/US4AK3LT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3LT/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 2, 2026 | metadata.json |