NOAA S-57 chart cell
Alaska
US4AK6ZT
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 324
- S-57 layers
- 23
- Published
- May 12, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 67.20000° N
- South
- 66.90000° N
- West
- 162.60000° W
- East
- 162.00000° W
- Center
- 67.05000° N, 162.30000° W
- Bounds area
- 253 sq nm
- Feature density
- 1.2806 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 14.1
- Smallest layer
- 1
- Largest layer
- 73
- Area sq km
- 868
- Features per sq km
- 0.37335
- LAKARE 73
- SLOTOP 71
- LNDRGN Land region 44
- RIVERS River 29
- DEPCNT Depth contour 25
- DEPARE Depth area 23
- COALNE Coastline 17
- M_QUAL Data quality 14
- LNDARE Land area 4
- BUISGL 3
- LNDMRK 3
- SOUNDG Sounding 3
- M_NPUB 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- UNSARE 2
- BUAARE 1
- M_COVR Coverage 1
- M_NSYS 1
- OBSTRN Obstruction 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/US4AK6ZT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK6ZT/2.0/US4AK6ZT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6ZT/2.0/US4AK6ZT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6ZT/2.0/US4AK6ZT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6ZT/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 12, 2026 | metadata.json |