NOAA S-57 chart cell
Rat Islands, AK
US4AK1CX
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 960
- S-57 layers
- 22
- Published
- Apr 12, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 51.90000° N
- South
- 51.60000° N
- West
- 178.20000° E
- East
- 178.80000° E
- Center
- 51.75000° N, 178.50000° E
- Bounds area
- 402 sq nm
- Feature density
- 2.3898 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 43.6
- Smallest layer
- 1
- Largest layer
- 236
- Area sq km
- 1,378
- Features per sq km
- 0.69674
- LNDARE Land area 236
- DEPCNT Depth contour 163
- DEPARE Depth area 158
- UWTROC Underwater rock 157
- COALNE Coastline 47
- OBSTRN Obstruction 45
- SBDARE Seabed area 38
- RIVERS River 33
- LNDRGN Land region 16
- WEDKLP 16
- LNDELV 11
- SEAARE Sea area 9
- SOUNDG Sounding 6
- ADMARE 4
- M_QUAL Data quality 4
- MAGVAR Magnetic variation 4
- WATTUR 4
- SLCONS Shoreline construction 3
- M_NPUB 2
- RESARE 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/US4AK1CX.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK1CX/1.0/US4AK1CX.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK1CX/1.0/US4AK1CX.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK1CX/1.0/US4AK1CX.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK1CX/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 12, 2024 | metadata.json |