NOAA S-57 chart cell
Alaska
US4AK5OG
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 331
- S-57 layers
- 22
- Published
- Mar 16, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.60000° N
- South
- 57.30000° N
- West
- 136.80000° W
- East
- 136.20000° W
- Center
- 57.45000° N, 136.50000° W
- Bounds area
- 349 sq nm
- Feature density
- 0.9481 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 15
- Smallest layer
- 1
- Largest layer
- 104
- Area sq km
- 1,197
- Features per sq km
- 0.27642
- SBDARE Seabed area 104
- DEPARE Depth area 57
- DEPCNT Depth contour 56
- UWTROC Underwater rock 36
- LNDARE Land area 17
- OBSTRN Obstruction 15
- COALNE Coastline 12
- WATTUR 7
- SOUNDG Sounding 5
- WEDKLP 4
- LNDELV 3
- MAGVAR Magnetic variation 3
- M_NPUB 2
- M_QUAL Data quality 2
- ADMARE 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 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/US4AK5OG.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK5OG/1.1/US4AK5OG.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK5OG/1.1/US4AK5OG.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5OG/1.1/US4AK5OG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5OG/1.1/US4AK5OG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5OG/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Mar 16, 2026 | metadata.json |