NOAA S-57 chart cell
Shumigan Islands
US4AK3NS
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 884
- S-57 layers
- 27
- Published
- Jun 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.80000° N
- South
- 55.50000° N
- West
- 160.80000° W
- East
- 160.20000° W
- Center
- 55.65000° N, 160.50000° W
- Bounds area
- 366 sq nm
- Feature density
- 2.4145 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 32.7
- Smallest layer
- 1
- Largest layer
- 155
- Area sq km
- 1,256
- Features per sq km
- 0.70395
- DEPCNT Depth contour 155
- DEPARE Depth area 151
- RIVERS River 114
- UWTROC Underwater rock 91
- COALNE Coastline 90
- SBDARE Seabed area 77
- LNDARE Land area 41
- LNDRGN Land region 23
- LNDELV 21
- M_QUAL Data quality 20
- OBSTRN Obstruction 20
- SEAARE Sea area 18
- SOUNDG Sounding 11
- PILPNT 9
- WEDKLP 8
- LNDMRK 7
- BUISGL 6
- LAKARE 6
- MAGVAR Magnetic variation 4
- SLOTOP 4
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/US4AK3NS.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3NS/2.0/US4AK3NS.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3NS/2.0/US4AK3NS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3NS/2.0/US4AK3NS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3NS/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 5, 2026 | metadata.json |