NOAA S-57 chart cell
Semidi Islands and Vicinity
US4AK5XM
- Usage band
- Approach · code 4
- Current edition
- 9.0
- Features
- 186
- S-57 layers
- 19
- Published
- Feb 20, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 56.61370° N
- South
- 55.59351° N
- West
- 157.66445° W
- East
- 155.12140° W
- Center
- 56.10361° N, 156.39293° W
- Bounds area
- 5,216 sq nm
- Feature density
- 0.0357 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 9.8
- Smallest layer
- 1
- Largest layer
- 41
- Area sq km
- 17,889
- Features per sq km
- 0.0104
- DEPARE Depth area 41
- DEPCNT Depth contour 41
- M_QUAL Data quality 35
- SBDARE Seabed area 25
- TESARE 10
- SOUNDG Sounding 8
- MAGVAR Magnetic variation 5
- CONZNE 4
- EXEZNE 3
- ADMARE 2
- COALNE Coastline 2
- LNDARE Land area 2
- M_COVR Coverage 2
- C_ASSO 1
- M_NPUB 1
- M_NSYS 1
- OBSTRN Obstruction 1
- SEAARE Sea area 1
- UWTROC Underwater rock 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/US4AK5XM.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK5XM/9.0/US4AK5XM.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK5XM/9.0/US4AK5XM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK5XM/9.0/US4AK5XM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK5XM/9.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 9.0 | Feb 20, 2025 | metadata.json |