NOAA S-57 chart cell
Rat Islands, AK
US3AK1AD
- Usage band
- Coastal · code 3
- Current edition
- 1.0
- Features
- 653
- S-57 layers
- 30
- Published
- May 19, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 51.60000° N
- South
- 50.40000° N
- West
- 177.60000° E
- East
- 180.00000° E
- Center
- 51.00000° N, 178.80000° E
- Bounds area
- 6,533 sq nm
- Feature density
- 0.0999 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 21.8
- Smallest layer
- 1
- Largest layer
- 117
- Area sq km
- 22,409
- Features per sq km
- 0.02914
- UWTROC Underwater rock 117
- LNDARE Land area 112
- DEPARE Depth area 108
- DEPCNT Depth contour 105
- COALNE Coastline 64
- SBDARE Seabed area 37
- WEDKLP 32
- LNDRGN Land region 16
- M_QUAL Data quality 11
- SEAARE Sea area 11
- SOUNDG Sounding 6
- MAGVAR Magnetic variation 5
- LNDELV 3
- LNDMRK 3
- RESARE 3
- RIVERS River 3
- OBSTRN Obstruction 2
- SILTNK 2
- WRECKS Wreck 2
- ADMARE 1
Nearby Chart Cells
Coastal 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/US3AK1AD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/coastal/US3AK1AD/1.0/US3AK1AD.000
- GeoJSON https://charts.openships.ai/noaa/s57/coastal/US3AK1AD/1.0/US3AK1AD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/coastal/US3AK1AD/1.0/US3AK1AD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/coastal/US3AK1AD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | May 19, 2026 | metadata.json |