NOAA S-57 chart cell
Alaska
US4AK5GZ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 8,802
- S-57 layers
- 36
- Published
- Jan 7, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 55.20000° N
- South
- 54.90000° N
- West
- 133.20000° W
- East
- 132.60000° W
- Center
- 55.05000° N, 132.90000° W
- Bounds area
- 372 sq nm
- Feature density
- 23.6794 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 244.5
- Smallest layer
- 1
- Largest layer
- 1,839
- Area sq km
- 1,275
- Features per sq km
- 6.90381
- DEPCNT Depth contour 1,839
- UWTROC Underwater rock 1,752
- DEPARE Depth area 1,686
- LNDARE Land area 1,150
- SBDARE Seabed area 820
- COALNE Coastline 757
- WEDKLP 248
- RIVERS River 144
- OBSTRN Obstruction 109
- LNDELV 92
- SEAARE Sea area 51
- M_QUAL Data quality 47
- LNDRGN Land region 31
- SOUNDG Sounding 21
- BCNSPP Special purpose beacon 6
- DAYMAR 6
- MAGVAR Magnetic variation 6
- LIGHTS Light 5
- ACHARE Anchorage area 4
- LNDMRK 4
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/US4AK5GZ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5GZ/1.0/US4AK5GZ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5GZ/1.0/US4AK5GZ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5GZ/1.0/US4AK5GZ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5GZ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 7, 2025 | metadata.json |