NOAA S-57 chart cell
Alaska
US4AK7KS
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 538
- S-57 layers
- 30
- Published
- May 22, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.50000° N
- South
- 70.20000° N
- West
- 147.60000° W
- East
- 146.40000° W
- Center
- 70.35000° N, 147.00000° W
- Bounds area
- 436 sq nm
- Feature density
- 1.2328 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.9
- Smallest layer
- 1
- Largest layer
- 116
- Area sq km
- 1,497
- Features per sq km
- 0.35943
- DEPCNT Depth contour 116
- DEPARE Depth area 103
- COALNE Coastline 65
- SBDARE Seabed area 50
- LNDARE Land area 46
- LAKARE 38
- CTNARE Caution area 29
- M_QUAL Data quality 19
- LNDRGN Land region 16
- OBSTRN Obstruction 13
- SOUNDG Sounding 7
- RIVERS River 6
- MAGVAR Magnetic variation 4
- SEAARE Sea area 4
- ADMARE 3
- CTRPNT 2
- M_NPUB 2
- OFSPLF 2
- SMCFAC 2
- AIRARE 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/US4AK7KS.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7KS/3.0/US4AK7KS.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7KS/3.0/US4AK7KS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7KS/3.0/US4AK7KS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7KS/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 22, 2026 | metadata.json |