NOAA S-57 chart cell
Shumigan Islands
US4AK3MR
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 1,322
- S-57 layers
- 31
- Published
- Jun 2, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.50000° N
- South
- 55.20000° N
- West
- 161.40000° W
- East
- 160.80000° W
- Center
- 55.35000° N, 161.10000° W
- Bounds area
- 369 sq nm
- Feature density
- 3.5834 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 42.6
- Smallest layer
- 1
- Largest layer
- 318
- Area sq km
- 1,265
- Features per sq km
- 1.04475
- DEPCNT Depth contour 318
- DEPARE Depth area 306
- UWTROC Underwater rock 226
- SBDARE Seabed area 123
- COALNE Coastline 60
- WEDKLP 59
- LNDARE Land area 43
- RIVERS River 39
- OBSTRN Obstruction 38
- M_QUAL Data quality 25
- SOUNDG Sounding 17
- LNDELV 15
- LNDRGN Land region 10
- WATTUR 9
- SLOTOP 6
- MAGVAR Magnetic variation 4
- ADMARE 3
- LAKARE 3
- SEAARE Sea area 3
- CTNARE Caution area 2
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/US4AK3MR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3MR/2.0/US4AK3MR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3MR/2.0/US4AK3MR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3MR/2.0/US4AK3MR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3MR/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 2, 2026 | metadata.json |