NOAA S-57 chart cell
Alaska
US4AK6YT
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 166
- S-57 layers
- 23
- Published
- May 12, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 66.90000° N
- South
- 66.60000° N
- West
- 162.60000° W
- East
- 162.00000° W
- Center
- 66.75000° N, 162.30000° W
- Bounds area
- 256 sq nm
- Feature density
- 0.6481 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7.2
- Smallest layer
- 1
- Largest layer
- 53
- Area sq km
- 879
- Features per sq km
- 0.18895
- SLOTOP 53
- LAKARE 21
- DEPARE Depth area 12
- LNDRGN Land region 12
- RIVERS River 11
- DEPCNT Depth contour 9
- COALNE Coastline 8
- M_QUAL Data quality 8
- SBDARE Seabed area 7
- BUISGL 4
- M_NPUB 3
- SEAARE Sea area 3
- BUAARE 2
- LNDMRK 2
- SOUNDG Sounding 2
- UNSARE 2
- BRIDGE 1
- LNDARE Land area 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/US4AK6YT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6YT/2.0/US4AK6YT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6YT/2.0/US4AK6YT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6YT/2.0/US4AK6YT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6YT/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 12, 2026 | metadata.json |