NOAA S-57 chart cell
Alaska
US4AK7JW
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 284
- S-57 layers
- 23
- Published
- May 21, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.20000° N
- South
- 69.90000° N
- West
- 142.80000° W
- East
- 141.60000° W
- Center
- 70.05000° N, 142.20000° W
- Bounds area
- 443 sq nm
- Feature density
- 0.6414 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 12.3
- Smallest layer
- 1
- Largest layer
- 64
- Area sq km
- 1,519
- Features per sq km
- 0.187
- COALNE Coastline 64
- SBDARE Seabed area 34
- RIVERS River 30
- DEPCNT Depth contour 29
- DEPARE Depth area 27
- LNDRGN Land region 25
- LAKARE 23
- SLOTOP 15
- SEAARE Sea area 8
- LNDARE Land area 6
- SOUNDG Sounding 5
- M_QUAL Data quality 4
- LNDMRK 2
- M_NPUB 2
- MAGVAR Magnetic variation 2
- ADMARE 1
- CONZNE 1
- COSARE 1
- CTRPNT 1
- EXEZNE 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/US4AK7JW.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7JW/3.0/US4AK7JW.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7JW/3.0/US4AK7JW.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7JW/3.0/US4AK7JW.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7JW/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 21, 2026 | metadata.json |