NOAA S-57 chart cell
Alaska
US4AK3SC
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 600
- S-57 layers
- 36
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.30000° N
- South
- 57.00000° N
- West
- 170.40000° W
- East
- 169.80000° W
- Center
- 57.15000° N, 170.10000° W
- Bounds area
- 352 sq nm
- Feature density
- 1.7047 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 16.7
- Smallest layer
- 1
- Largest layer
- 110
- Area sq km
- 1,207
- Features per sq km
- 0.497
- DEPCNT Depth contour 110
- DEPARE Depth area 102
- SBDARE Seabed area 74
- UWTROC Underwater rock 63
- COALNE Coastline 53
- LNDARE Land area 26
- BUISGL 20
- LNDRGN Land region 20
- M_QUAL Data quality 18
- SLCONS Shoreline construction 15
- LNDELV 12
- SOUNDG Sounding 12
- OBSTRN Obstruction 11
- WEDKLP 10
- SEAARE Sea area 9
- LAKARE 5
- WATTUR 5
- SILTNK 4
- ACHARE Anchorage area 3
- LIGHTS Light 3
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/US4AK3SC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3SC/4.0/US4AK3SC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3SC/4.0/US4AK3SC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3SC/4.0/US4AK3SC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3SC/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | May 27, 2026 | metadata.json |