NOAA S-57 chart cell
Alaska
US4AK7DC
- Usage band
- Approach · code 4
- Current edition
- 4.0
- Features
- 372
- S-57 layers
- 32
- Published
- Jun 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 68.40000° N
- South
- 68.10000° N
- West
- 166.80000° W
- East
- 165.60000° W
- Center
- 68.25000° N, 166.20000° W
- Bounds area
- 481 sq nm
- Feature density
- 0.7736 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.6
- Smallest layer
- 1
- Largest layer
- 120
- Area sq km
- 1,649
- Features per sq km
- 0.22554
- LAKARE 120
- COALNE Coastline 58
- LNDRGN Land region 31
- RIVERS River 30
- LNDELV 29
- DEPARE Depth area 24
- DEPCNT Depth contour 15
- M_QUAL Data quality 8
- SLOTOP 8
- LNDARE Land area 6
- SBDARE Seabed area 6
- SEAARE Sea area 6
- SOUNDG Sounding 6
- CTNARE Caution area 3
- M_NPUB 3
- AIRARE 2
- LIGHTS Light 2
- BCNSPP Special purpose beacon 1
- BUAARE 1
- BUISGL 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/US4AK7DC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK7DC/4.0/US4AK7DC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK7DC/4.0/US4AK7DC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK7DC/4.0/US4AK7DC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK7DC/4.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.0 | Jun 3, 2026 | metadata.json |