NOAA S-57 chart cell
Cape Alitak to Low Cape
US4AK4GC
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 639
- S-57 layers
- 37
- Published
- Jun 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.00000° N
- South
- 56.70000° N
- West
- 154.80000° W
- East
- 154.20000° W
- Center
- 56.85000° N, 154.50000° W
- Bounds area
- 355 sq nm
- Feature density
- 1.8009 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.3
- Smallest layer
- 1
- Largest layer
- 119
- Area sq km
- 1,217
- Features per sq km
- 0.52505
- SBDARE Seabed area 119
- DEPARE Depth area 90
- DEPCNT Depth contour 87
- WEDKLP 65
- UWTROC Underwater rock 59
- COALNE Coastline 53
- RIVERS River 41
- LNDARE Land area 31
- M_QUAL Data quality 12
- SOUNDG Sounding 11
- SEAARE Sea area 9
- LNDELV 8
- LNDRGN Land region 7
- SLOGRD 7
- LAKARE 5
- OBSTRN Obstruction 5
- CTNARE Caution area 3
- BUISGL 2
- DAYMAR 2
- LIGHTS Light 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/US4AK4GC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4GC/2.0/US4AK4GC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4GC/2.0/US4AK4GC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4GC/2.0/US4AK4GC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4GC/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 15, 2026 | metadata.json |