NOAA S-57 chart cell
Alaska
US4AK7HF
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 306
- S-57 layers
- 21
- Published
- Jun 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 69.60000° N
- South
- 69.30000° N
- West
- 163.20000° W
- East
- 162.00000° W
- Center
- 69.45000° N, 162.60000° W
- Bounds area
- 456 sq nm
- Feature density
- 0.6717 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 14.6
- Smallest layer
- 1
- Largest layer
- 50
- Area sq km
- 1,562
- Features per sq km
- 0.19584
- COALNE Coastline 50
- LNDRGN Land region 50
- DEPCNT Depth contour 48
- DEPARE Depth area 47
- RIVERS River 29
- LAKARE 25
- LNDARE Land area 17
- M_QUAL Data quality 12
- SBDARE Seabed area 5
- OBSTRN Obstruction 4
- CTNARE Caution area 3
- CTRPNT 3
- SEAARE Sea area 3
- MAGVAR Magnetic variation 2
- UNSARE 2
- LNDMRK 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- SLOTOP 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/US4AK7HF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7HF/3.0/US4AK7HF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7HF/3.0/US4AK7HF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7HF/3.0/US4AK7HF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7HF/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 17, 2026 | metadata.json |