NOAA S-57 chart cell
Alaska
US4AK5RF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 937
- S-57 layers
- 33
- Published
- Apr 22, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 58.50000° N
- South
- 58.20000° N
- West
- 137.40000° W
- East
- 136.80000° W
- Center
- 58.35000° N, 137.10000° W
- Bounds area
- 340 sq nm
- Feature density
- 2.752 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 28.4
- Smallest layer
- 1
- Largest layer
- 223
- Area sq km
- 1,168
- Features per sq km
- 0.80235
- SBDARE Seabed area 223
- UWTROC Underwater rock 199
- DEPCNT Depth contour 99
- DEPARE Depth area 93
- LNDARE Land area 78
- COALNE Coastline 44
- RIVERS River 40
- OBSTRN Obstruction 27
- SLOTOP 26
- SLOGRD 21
- WEDKLP 16
- LNDELV 14
- M_QUAL Data quality 10
- LNDRGN Land region 7
- SEAARE Sea area 7
- ICEARE 6
- SOUNDG Sounding 4
- CTNARE Caution area 3
- MAGVAR Magnetic variation 3
- M_NPUB 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/US4AK5RF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5RF/1.0/US4AK5RF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5RF/1.0/US4AK5RF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5RF/1.0/US4AK5RF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5RF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 22, 2024 | metadata.json |