NOAA S-57 chart cell
Alaska
US4AK3OT
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 242
- S-57 layers
- 23
- Published
- Jun 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.10000° N
- South
- 55.80000° N
- West
- 160.20000° W
- East
- 159.60000° W
- Center
- 55.95000° N, 159.90000° W
- Bounds area
- 363 sq nm
- Feature density
- 0.6661 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.5
- Smallest layer
- 1
- Largest layer
- 52
- Area sq km
- 1,246
- Features per sq km
- 0.1942
- DEPARE Depth area 52
- DEPCNT Depth contour 50
- COALNE Coastline 25
- LNDARE Land area 18
- SBDARE Seabed area 18
- RIVERS River 16
- UWTROC Underwater rock 16
- LNDELV 11
- LNDRGN Land region 7
- SEAARE Sea area 7
- OBSTRN Obstruction 4
- SLOGRD 3
- M_QUAL Data quality 2
- SOUNDG Sounding 2
- WATTUR 2
- WEDKLP 2
- BUAARE 1
- CTNARE Caution area 1
- M_COVR Coverage 1
- M_NPUB 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/US4AK3OT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3OT/2.0/US4AK3OT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3OT/2.0/US4AK3OT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3OT/2.0/US4AK3OT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3OT/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 5, 2026 | metadata.json |