NOAA S-57 chart cell
Alaska
US4AK7LH
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 299
- S-57 layers
- 34
- Published
- May 27, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 70.80000° N
- South
- 70.50000° N
- West
- 160.80000° W
- East
- 159.60000° W
- Center
- 70.65000° N, 160.20000° W
- Bounds area
- 430 sq nm
- Feature density
- 0.6954 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 8.8
- Smallest layer
- 1
- Largest layer
- 48
- Area sq km
- 1,475
- Features per sq km
- 0.20273
- DEPARE Depth area 48
- COALNE Coastline 46
- DEPCNT Depth contour 43
- BUISGL 27
- LNDRGN Land region 18
- LAKARE 15
- LNDARE Land area 15
- RIVERS River 13
- M_QUAL Data quality 10
- SBDARE Seabed area 10
- SILTNK 8
- SOUNDG Sounding 6
- UNSARE 5
- LNDMRK 4
- CTNARE Caution area 3
- SEAARE Sea area 3
- SLOTOP 3
- LIGHTS Light 2
- M_NPUB 2
- MAGVAR Magnetic variation 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/US4AK7LH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7LH/3.0/US4AK7LH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7LH/3.0/US4AK7LH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7LH/3.0/US4AK7LH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7LH/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | May 27, 2026 | metadata.json |