NOAA S-57 chart cell
Shumigan Islands
US4AK3NR
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 343
- S-57 layers
- 22
- Published
- Jun 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.80000° N
- South
- 55.50000° N
- West
- 161.40000° W
- East
- 160.80000° W
- Center
- 55.65000° N, 161.10000° W
- Bounds area
- 366 sq nm
- Feature density
- 0.9368 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 15.6
- Smallest layer
- 1
- Largest layer
- 66
- Area sq km
- 1,256
- Features per sq km
- 0.27314
- COALNE Coastline 66
- DEPARE Depth area 52
- RIVERS River 52
- DEPCNT Depth contour 44
- UWTROC Underwater rock 29
- SBDARE Seabed area 24
- LNDARE Land area 14
- M_QUAL Data quality 11
- OBSTRN Obstruction 11
- LNDRGN Land region 8
- SLOTOP 8
- SEAARE Sea area 6
- SOUNDG Sounding 6
- BUISGL 2
- LAKARE 2
- MAGVAR Magnetic variation 2
- CTNARE Caution area 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/US4AK3NR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3NR/2.0/US4AK3NR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3NR/2.0/US4AK3NR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3NR/2.0/US4AK3NR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3NR/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 5, 2026 | metadata.json |