NOAA S-57 chart cell
Kuskokwim Bay to Bethel, Alaska
US4AK6BU
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 55
- S-57 layers
- 19
- Published
- Jun 3, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 162.00000° W
- East
- 161.40000° W
- Center
- 59.85000° N, 161.70000° W
- Bounds area
- 326 sq nm
- Feature density
- 0.1688 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 2.9
- Smallest layer
- 1
- Largest layer
- 8
- Area sq km
- 1,118
- Features per sq km
- 0.0492
- DEPARE Depth area 8
- DEPCNT Depth contour 8
- LAKARE 8
- RIVERS River 8
- COALNE Coastline 4
- SLOTOP 3
- LNDMRK 2
- M_QUAL Data quality 2
- UNSARE 2
- BUAARE 1
- BUISGL 1
- CBLSUB 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- SEAARE Sea area 1
- SOUNDG Sounding 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/US4AK6BU.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6BU/1.1/US4AK6BU.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6BU/1.1/US4AK6BU.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6BU/1.1/US4AK6BU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6BU/1.1/US4AK6BU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6BU/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Jun 3, 2025 | metadata.json |