NOAA S-57 chart cell
North Pacific Ocean
US4AK4FB
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 27
- S-57 layers
- 16
- Published
- Jun 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.70000° N
- South
- 56.40000° N
- West
- 155.40000° W
- East
- 154.80000° W
- Center
- 56.55000° N, 155.10000° W
- Bounds area
- 358 sq nm
- Feature density
- 0.0755 / sq nm
Chart Statistics
16 largest layers shown
- Average features per layer
- 1.7
- Smallest layer
- 1
- Largest layer
- 4
- Area sq km
- 1,227
- Features per sq km
- 0.02201
- SOUNDG Sounding 4
- DEPARE Depth area 3
- M_QUAL Data quality 3
- MAGVAR Magnetic variation 3
- DEPCNT Depth contour 2
- SBDARE Seabed area 2
- ADMARE 1
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- OBSTRN Obstruction 1
- SEAARE Sea area 1
- TESARE 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/US4AK4FB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4FB/2.0/US4AK4FB.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4FB/2.0/US4AK4FB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4FB/2.0/US4AK4FB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4FB/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 15, 2026 | metadata.json |