NOAA S-57 chart cell
Gulf of Alaska
US4AK5WB
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 923
- S-57 layers
- 22
- Published
- Dec 5, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.00000° N
- South
- 59.70000° N
- West
- 139.80000° W
- East
- 139.20000° W
- Center
- 59.85000° N, 139.50000° W
- Bounds area
- 326 sq nm
- Feature density
- 2.8321 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 42
- Smallest layer
- 1
- Largest layer
- 229
- Area sq km
- 1,118
- Features per sq km
- 0.82571
- DEPCNT Depth contour 229
- UWTROC Underwater rock 222
- DEPARE Depth area 202
- RIVERS River 111
- SBDARE Seabed area 39
- COALNE Coastline 29
- LNDARE Land area 15
- M_QUAL Data quality 15
- SOUNDG Sounding 13
- ICEARE 9
- LNDRGN Land region 8
- SEAARE Sea area 8
- WEDKLP 5
- CTNARE Caution area 4
- LNDELV 3
- MAGVAR Magnetic variation 3
- OBSTRN Obstruction 2
- UNSARE 2
- BOYLAT Lateral buoy 1
- M_COVR Coverage 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/US4AK5WB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5WB/1.0/US4AK5WB.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5WB/1.0/US4AK5WB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5WB/1.0/US4AK5WB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5WB/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 5, 2023 | metadata.json |