NOAA S-57 chart cell
Bristol Bay to Togiak Bay
US4AK3YS
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 490
- S-57 layers
- 28
- Published
- Jun 11, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.10000° N
- South
- 58.80000° N
- West
- 160.80000° W
- East
- 160.20000° W
- Center
- 58.95000° N, 160.50000° W
- Bounds area
- 335 sq nm
- Feature density
- 1.4641 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.5
- Smallest layer
- 1
- Largest layer
- 98
- Area sq km
- 1,148
- Features per sq km
- 0.42686
- DEPCNT Depth contour 98
- DEPARE Depth area 85
- COALNE Coastline 79
- SBDARE Seabed area 60
- UWTROC Underwater rock 57
- RIVERS River 25
- LNDRGN Land region 22
- OBSTRN Obstruction 15
- LNDARE Land area 14
- LNDELV 5
- BUISGL 4
- SEAARE Sea area 4
- SLCONS Shoreline construction 3
- TESARE 3
- ADMARE 2
- MAGVAR Magnetic variation 2
- AIRARE 1
- BUAARE 1
- LIGHTS Light 1
- LNDMRK 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/US4AK3YS.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3YS/2.0/US4AK3YS.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3YS/2.0/US4AK3YS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3YS/2.0/US4AK3YS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3YS/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 11, 2026 | metadata.json |