NOAA S-57 chart cell
Gulf of Alaska
US4AK4LH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 172
- S-57 layers
- 24
- Published
- Jul 1, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 58.50000° N
- South
- 58.20000° N
- West
- 151.80000° W
- East
- 151.20000° W
- Center
- 58.35000° N, 151.50000° W
- Bounds area
- 340 sq nm
- Feature density
- 0.5052 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7.2
- Smallest layer
- 1
- Largest layer
- 45
- Area sq km
- 1,168
- Features per sq km
- 0.14728
- DEPARE Depth area 45
- DEPCNT Depth contour 44
- SBDARE Seabed area 29
- LNDARE Land area 11
- COALNE Coastline 8
- UWTROC Underwater rock 8
- SOUNDG Sounding 5
- CBLSUB 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- OBSTRN Obstruction 2
- WATTUR 2
- ADMARE 1
- CONZNE 1
- CTNARE Caution area 1
- EXEZNE 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4AK4LH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4LH/1.0/US4AK4LH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4LH/1.0/US4AK4LH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4LH/1.0/US4AK4LH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4LH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 1, 2025 | metadata.json |