NOAA S-57 chart cell
Port Dick and Nuka Passage
US4AK4OI
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,738
- S-57 layers
- 25
- Published
- Jul 16, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.40000° N
- South
- 59.10000° N
- West
- 151.20000° W
- East
- 150.60000° W
- Center
- 59.25000° N, 150.90000° W
- Bounds area
- 332 sq nm
- Feature density
- 5.2386 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 69.5
- Smallest layer
- 1
- Largest layer
- 654
- Area sq km
- 1,138
- Features per sq km
- 1.52734
- UWTROC Underwater rock 654
- DEPCNT Depth contour 196
- DEPARE Depth area 194
- SBDARE Seabed area 172
- LNDARE Land area 143
- OBSTRN Obstruction 95
- LNDELV 74
- RIVERS River 67
- WEDKLP 51
- COALNE Coastline 33
- SEAARE Sea area 13
- SLOTOP 13
- LNDRGN Land region 7
- LAKARE 6
- SOUNDG Sounding 6
- M_QUAL Data quality 3
- MAGVAR Magnetic variation 2
- WATTUR 2
- ADMARE 1
- ICEARE 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/US4AK4OI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4OI/1.0/US4AK4OI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4OI/1.0/US4AK4OI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4OI/1.0/US4AK4OI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4OI/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 16, 2025 | metadata.json |