NOAA S-57 chart cell
Alaska
US4AK3KT
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 422
- S-57 layers
- 26
- Published
- Jun 2, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.90000° N
- South
- 54.60000° N
- West
- 160.20000° W
- East
- 159.60000° W
- Center
- 54.75000° N, 159.90000° W
- Bounds area
- 374 sq nm
- Feature density
- 1.1269 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 16.2
- Smallest layer
- 1
- Largest layer
- 93
- Area sq km
- 1,284
- Features per sq km
- 0.32854
- DEPARE Depth area 93
- DEPCNT Depth contour 92
- SBDARE Seabed area 52
- M_QUAL Data quality 39
- LNDARE Land area 33
- WEDKLP 30
- COALNE Coastline 16
- LNDELV 14
- SOUNDG Sounding 12
- UWTROC Underwater rock 11
- OBSTRN Obstruction 7
- LAKARE 3
- SEAARE Sea area 3
- SLOGRD 3
- ADMARE 2
- M_NPUB 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/US4AK3KT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3KT/2.0/US4AK3KT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3KT/2.0/US4AK3KT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3KT/2.0/US4AK3KT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3KT/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 2, 2026 | metadata.json |