NOAA S-57 chart cell
Gulf of Alaska
US4AK4GE
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 550
- S-57 layers
- 27
- Published
- Aug 4, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.00000° N
- South
- 56.70000° N
- West
- 153.60000° W
- East
- 153.00000° W
- Center
- 56.85000° N, 153.30000° W
- Bounds area
- 355 sq nm
- Feature density
- 1.5501 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 20.4
- Smallest layer
- 1
- Largest layer
- 91
- Area sq km
- 1,217
- Features per sq km
- 0.45192
- DEPCNT Depth contour 91
- DEPARE Depth area 85
- SBDARE Seabed area 81
- UWTROC Underwater rock 78
- LNDARE Land area 57
- WEDKLP 53
- COALNE Coastline 23
- OBSTRN Obstruction 13
- SOUNDG Sounding 12
- LNDELV 11
- M_QUAL Data quality 11
- RIVERS River 9
- MAGVAR Magnetic variation 4
- SEAARE Sea area 4
- WATTUR 4
- LNDRGN Land region 3
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- LAKARE 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/US4AK4GE.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4GE/1.0/US4AK4GE.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4GE/1.0/US4AK4GE.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4GE/1.0/US4AK4GE.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4GE/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 4, 2025 | metadata.json |