NOAA S-57 chart cell
Gulf of Alaska
US4AK5VB
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 1,370
- S-57 layers
- 39
- Published
- Mar 14, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.70000° N
- South
- 59.40000° N
- West
- 139.80000° W
- East
- 139.20000° W
- Center
- 59.55000° N, 139.50000° W
- Bounds area
- 329 sq nm
- Feature density
- 4.1661 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 35.1
- Smallest layer
- 1
- Largest layer
- 429
- Area sq km
- 1,128
- Features per sq km
- 1.21465
- UWTROC Underwater rock 429
- DEPCNT Depth contour 326
- DEPARE Depth area 290
- COALNE Coastline 61
- SBDARE Seabed area 57
- LNDARE Land area 55
- RIVERS River 23
- OBSTRN Obstruction 18
- M_QUAL Data quality 15
- SEAARE Sea area 15
- LNDRGN Land region 12
- SLCONS Shoreline construction 10
- SOUNDG Sounding 10
- LIGHTS Light 6
- WEDKLP 6
- WATTUR 4
- LNDMRK 3
- BCNSPP Special purpose beacon 2
- BOYLAT Lateral buoy 2
- BOYSPP Special purpose buoy 2
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/US4AK5VB.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK5VB/1.1/US4AK5VB.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK5VB/1.1/US4AK5VB.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5VB/1.1/US4AK5VB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5VB/1.1/US4AK5VB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5VB/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Mar 14, 2025 | metadata.json |