NOAA S-57 chart cell
North Pacific Ocean
US4AK3IO
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 232
- S-57 layers
- 22
- Published
- Aug 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.30000° N
- South
- 54.00000° N
- West
- 163.20000° W
- East
- 162.60000° W
- Center
- 54.15000° N, 162.90000° W
- Bounds area
- 380 sq nm
- Feature density
- 0.6105 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.5
- Smallest layer
- 1
- Largest layer
- 63
- Area sq km
- 1,303
- Features per sq km
- 0.17799
- DEPCNT Depth contour 63
- DEPARE Depth area 62
- SBDARE Seabed area 32
- COALNE Coastline 13
- LNDARE Land area 13
- UWTROC Underwater rock 11
- WEDKLP 8
- M_QUAL Data quality 5
- OBSTRN Obstruction 4
- SEAARE Sea area 4
- LNDELV 3
- SOUNDG Sounding 3
- MAGVAR Magnetic variation 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- FAIRWY Fairway 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4AK3IO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3IO/1.0/US4AK3IO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3IO/1.0/US4AK3IO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3IO/1.0/US4AK3IO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3IO/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 29, 2025 | metadata.json |