NOAA S-57 chart cell
Alaska
US4AK7IX
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 338
- S-57 layers
- 33
- Published
- Apr 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 69.90000° N
- South
- 69.60000° N
- West
- 141.60000° W
- East
- 141.00000° W
- Center
- 69.75000° N, 141.30000° W
- Bounds area
- 225 sq nm
- Feature density
- 1.505 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.2
- Smallest layer
- 1
- Largest layer
- 76
- Area sq km
- 770
- Features per sq km
- 0.43878
- COALNE Coastline 76
- SLOTOP 45
- RIVERS River 34
- DEPARE Depth area 24
- DEPCNT Depth contour 24
- SBDARE Seabed area 21
- SLOGRD 21
- LNDRGN Land region 20
- LNDARE Land area 16
- LAKARE 9
- LNDMRK 7
- M_QUAL Data quality 6
- MAGVAR Magnetic variation 4
- OBSTRN Obstruction 4
- SEAARE Sea area 4
- CTNARE Caution area 2
- SLCONS Shoreline construction 2
- SOUNDG Sounding 2
- TESARE 2
- UWTROC Underwater rock 2
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/US4AK7IX.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7IX/3.0/US4AK7IX.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7IX/3.0/US4AK7IX.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7IX/3.0/US4AK7IX.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7IX/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Apr 3, 2026 | metadata.json |