NOAA S-57 chart cell
Alaska
US4AK3RV
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 608
- S-57 layers
- 26
- Published
- Apr 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.00000° N
- South
- 56.70000° N
- West
- 159.00000° W
- East
- 158.40000° W
- Center
- 56.85000° N, 158.70000° W
- Bounds area
- 355 sq nm
- Feature density
- 1.7135 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 23.4
- Smallest layer
- 1
- Largest layer
- 214
- Area sq km
- 1,217
- Features per sq km
- 0.49958
- LAKARE 214
- COALNE Coastline 95
- DEPARE Depth area 70
- DEPCNT Depth contour 64
- RIVERS River 53
- LNDARE Land area 33
- LNDRGN Land region 21
- SBDARE Seabed area 16
- SEAARE Sea area 8
- M_QUAL Data quality 7
- LNDMRK 5
- BUISGL 3
- SLCONS Shoreline construction 3
- AIRARE 2
- CTNARE Caution area 2
- SOUNDG Sounding 2
- ADMARE 1
- BUAARE 1
- M_COVR Coverage 1
- M_NPUB 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/US4AK3RV.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3RV/1.0/US4AK3RV.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3RV/1.0/US4AK3RV.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3RV/1.0/US4AK3RV.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3RV/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 25, 2024 | metadata.json |