NOAA S-57 chart cell
Alaska
US4AK7IW
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 952
- S-57 layers
- 24
- Published
- May 21, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 69.90000° N
- South
- 69.60000° N
- West
- 142.80000° W
- East
- 141.60000° W
- Center
- 69.75000° N, 142.20000° W
- Bounds area
- 449 sq nm
- Feature density
- 2.1194 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 39.7
- Smallest layer
- 1
- Largest layer
- 329
- Area sq km
- 1,541
- Features per sq km
- 0.61793
- LNDRGN Land region 329
- RIVERS River 244
- COALNE Coastline 111
- LAKARE 93
- LNDARE Land area 42
- DEPCNT Depth contour 34
- DEPARE Depth area 31
- SBDARE Seabed area 17
- SLOTOP 16
- M_QUAL Data quality 7
- SEAARE Sea area 6
- SLCONS Shoreline construction 4
- ICEARE 3
- CTNARE Caution area 2
- LNDMRK 2
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- ADMARE 1
- AIRARE 1
- M_COVR Coverage 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/US4AK7IW.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7IW/3.0/US4AK7IW.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7IW/3.0/US4AK7IW.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7IW/3.0/US4AK7IW.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7IW/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 21, 2026 | metadata.json |