NOAA S-57 chart cell
Alaska
US4AK7LP
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 164
- S-57 layers
- 18
- Published
- Feb 5, 2021
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.80000° N
- South
- 70.50000° N
- West
- 151.20000° W
- East
- 150.00000° W
- Center
- 70.65000° N, 150.60000° W
- Bounds area
- 430 sq nm
- Feature density
- 0.3814 / sq nm
Chart Statistics
18 largest layers shown
- Average features per layer
- 9.1
- Smallest layer
- 1
- Largest layer
- 56
- Area sq km
- 1,475
- Features per sq km
- 0.1112
- SBDARE Seabed area 56
- DEPCNT Depth contour 28
- DEPARE Depth area 22
- COALNE Coastline 12
- LNDARE Land area 12
- SOUNDG Sounding 7
- M_QUAL Data quality 5
- MAGVAR Magnetic variation 5
- SEAARE Sea area 5
- CBLSUB 2
- CTNARE Caution area 2
- OBSTRN Obstruction 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4AK7LP.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7LP/2.0/US4AK7LP.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7LP/2.0/US4AK7LP.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7LP/2.0/US4AK7LP.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7LP/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Feb 5, 2021 | metadata.json |