NOAA S-57 chart cell
Alaska
US4AK6BO
- Usage band
- Approach · code 4
- Current edition
- 2.1
- Features
- 126
- S-57 layers
- 21
- Published
- Mar 8, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 165.60000° W
- East
- 165.00000° W
- Center
- 59.85000° N, 165.30000° W
- Bounds area
- 326 sq nm
- Feature density
- 0.3866 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6
- Smallest layer
- 1
- Largest layer
- 26
- Area sq km
- 1,118
- Features per sq km
- 0.11272
- DEPCNT Depth contour 26
- DEPARE Depth area 19
- LNDARE Land area 17
- M_QUAL Data quality 17
- COALNE Coastline 10
- UWTROC Underwater rock 8
- SOUNDG Sounding 7
- CTNARE Caution area 4
- LNDRGN Land region 3
- MAGVAR Magnetic variation 2
- OBSTRN Obstruction 2
- SEAARE Sea area 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- LAKARE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- RESARE 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/US4AK6BO.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6BO/2.1/US4AK6BO.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6BO/2.1/US4AK6BO.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6BO/2.1/US4AK6BO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6BO/2.1/US4AK6BO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6BO/2.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.1 | Mar 8, 2023 | metadata.json |