NOAA S-57 chart cell
Alaska
US4AK5OK
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 3,058
- S-57 layers
- 36
- Published
- Mar 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.60000° N
- South
- 57.30000° N
- West
- 134.40000° W
- East
- 133.80000° W
- Center
- 57.45000° N, 134.10000° W
- Bounds area
- 349 sq nm
- Feature density
- 8.7592 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 84.9
- Smallest layer
- 1
- Largest layer
- 697
- Area sq km
- 1,197
- Features per sq km
- 2.55378
- DEPCNT Depth contour 697
- DEPARE Depth area 504
- UWTROC Underwater rock 467
- COALNE Coastline 400
- SBDARE Seabed area 393
- LNDARE Land area 156
- RIVERS River 118
- LNDELV 70
- SLOGRD 46
- M_QUAL Data quality 35
- OBSTRN Obstruction 23
- SEAARE Sea area 22
- WEDKLP 21
- VEGATN 17
- LNDRGN Land region 14
- SLCONS Shoreline construction 14
- SOUNDG Sounding 9
- LAKARE 8
- CBLARE 5
- M_NPUB 5
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/US4AK5OK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5OK/1.0/US4AK5OK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5OK/1.0/US4AK5OK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5OK/1.0/US4AK5OK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5OK/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 19, 2025 | metadata.json |