NOAA S-57 chart cell
Shuyak Island and Vicinity; Shelikof Strait
US4AK4MF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 2,145
- S-57 layers
- 31
- Published
- Jul 1, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 58.80000° N
- South
- 58.50000° N
- West
- 153.00000° W
- East
- 152.40000° W
- Center
- 58.65000° N, 152.70000° W
- Bounds area
- 338 sq nm
- Feature density
- 6.3539 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 69.2
- Smallest layer
- 1
- Largest layer
- 403
- Area sq km
- 1,158
- Features per sq km
- 1.85251
- UWTROC Underwater rock 403
- DEPARE Depth area 324
- LNDARE Land area 301
- DEPCNT Depth contour 300
- SBDARE Seabed area 225
- COALNE Coastline 209
- WEDKLP 165
- OBSTRN Obstruction 74
- LNDELV 34
- RIVERS River 33
- SEAARE Sea area 18
- LAKARE 8
- LNDRGN Land region 7
- M_QUAL Data quality 7
- SOUNDG Sounding 7
- VEGATN 6
- BUISGL 5
- WATTUR 4
- MAGVAR Magnetic variation 3
- ADMARE 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/US4AK4MF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4MF/1.0/US4AK4MF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4MF/1.0/US4AK4MF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4MF/1.0/US4AK4MF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4MF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 1, 2025 | metadata.json |