NOAA S-57 chart cell
Harding Gateway to Aialik Bay
US4AK4QK
- Usage band
- Approach · code 4
- Current edition
- 2.1
- Features
- 1,039
- S-57 layers
- 30
- Published
- Aug 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 150.00000° W
- East
- 149.40000° W
- Center
- 59.85000° N, 149.70000° W
- Bounds area
- 326 sq nm
- Feature density
- 3.188 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 34.6
- Smallest layer
- 1
- Largest layer
- 272
- Area sq km
- 1,118
- Features per sq km
- 0.92948
- UWTROC Underwater rock 272
- SBDARE Seabed area 218
- DEPARE Depth area 102
- DEPCNT Depth contour 91
- LNDARE Land area 80
- COALNE Coastline 46
- OBSTRN Obstruction 46
- RIVERS River 33
- SEAARE Sea area 29
- LNDRGN Land region 27
- LNDELV 18
- LAKARE 15
- M_QUAL Data quality 14
- SLOGRD 11
- ICEARE 7
- SOUNDG Sounding 6
- WEDKLP 4
- CBLSUB 3
- TESARE 3
- UNSARE 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/US4AK4QK.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK4QK/2.1/US4AK4QK.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK4QK/2.1/US4AK4QK.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4QK/2.1/US4AK4QK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4QK/2.1/US4AK4QK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4QK/2.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.1 | Aug 19, 2025 | metadata.json |