NOAA S-57 chart cell
North Atlantic Ocean - Approaches to Charleston Harbor
US4SC1BQ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 48
- S-57 layers
- 14
- Published
- Sep 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 32.70000° N
- South
- 32.40000° N
- West
- 79.50000° W
- East
- 79.20000° W
- Center
- 32.55000° N, 79.35000° W
- Bounds area
- 273 sq nm
- Feature density
- 0.1755 / sq nm
Chart Statistics
14 largest layers shown
- Average features per layer
- 3.4
- Smallest layer
- 1
- Largest layer
- 11
- Area sq km
- 938
- Features per sq km
- 0.05117
- M_QUAL Data quality 11
- SOUNDG Sounding 7
- OBSTRN Obstruction 6
- SBDARE Seabed area 6
- DEPARE Depth area 4
- DEPCNT Depth contour 3
- M_NPUB 2
- MAGVAR Magnetic variation 2
- RESARE 2
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- SEAARE Sea area 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/US4SC1BQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4SC1BQ/1.0/US4SC1BQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4SC1BQ/1.0/US4SC1BQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4SC1BQ/1.0/US4SC1BQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4SC1BQ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Sep 29, 2025 | metadata.json |