NOAA S-57 chart cell
Alaska
US4AK7LN
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 135
- S-57 layers
- 17
- Published
- Jun 16, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.80000° N
- South
- 70.50000° N
- West
- 153.60000° W
- East
- 152.40000° W
- Center
- 70.65000° N, 153.00000° W
- Bounds area
- 430 sq nm
- Feature density
- 0.314 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 7.9
- Smallest layer
- 1
- Largest layer
- 41
- Area sq km
- 1,475
- Features per sq km
- 0.09154
- COALNE Coastline 41
- LAKARE 28
- LNDRGN Land region 12
- DEPARE Depth area 11
- LNDARE Land area 8
- M_QUAL Data quality 7
- SLOTOP 7
- DEPCNT Depth contour 5
- RIVERS River 4
- SEAARE Sea area 4
- CTNARE Caution area 2
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- SBDARE Seabed area 1
- SOUNDG Sounding 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/US4AK7LN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7LN/3.0/US4AK7LN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7LN/3.0/US4AK7LN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7LN/3.0/US4AK7LN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7LN/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 16, 2026 | metadata.json |