NOAA S-57 chart cell
Alaska
US4AK7BD
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 98
- S-57 layers
- 26
- Published
- Jun 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 67.80000° N
- South
- 67.50000° N
- West
- 165.60000° W
- East
- 164.40000° W
- Center
- 67.65000° N, 165.00000° W
- Bounds area
- 493 sq nm
- Feature density
- 0.1986 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 3.8
- Smallest layer
- 1
- Largest layer
- 24
- Area sq km
- 1,693
- Features per sq km
- 0.0579
- LAKARE 24
- COALNE Coastline 13
- DEPARE Depth area 9
- RIVERS River 9
- DEPCNT Depth contour 8
- LNDRGN Land region 4
- SOUNDG Sounding 4
- M_QUAL Data quality 3
- MAGVAR Magnetic variation 3
- SBDARE Seabed area 3
- BUISGL 2
- M_NPUB 2
- BRIDGE 1
- BUAARE 1
- CBLSUB 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- LNDARE Land area 1
- M_COVR Coverage 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/US4AK7BD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7BD/2.0/US4AK7BD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7BD/2.0/US4AK7BD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7BD/2.0/US4AK7BD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7BD/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 3, 2026 | metadata.json |