NOAA S-57 chart cell
Saint Helena Sound, Coosaw, and Morgan Rivers
US4SC1BM
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 3,355
- S-57 layers
- 42
- Published
- Sep 9, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 32.70000° N
- South
- 32.40000° N
- West
- 80.70000° W
- East
- 80.40000° W
- Center
- 32.55000° N, 80.55000° W
- Bounds area
- 273 sq nm
- Feature density
- 12.268 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 79.9
- Smallest layer
- 1
- Largest layer
- 727
- Area sq km
- 938
- Features per sq km
- 3.57678
- DEPCNT Depth contour 727
- DEPARE Depth area 659
- COALNE Coastline 570
- RIVERS River 351
- LNDRGN Land region 313
- SLCONS Shoreline construction 173
- LNDARE Land area 119
- M_QUAL Data quality 62
- SEAARE Sea area 60
- SBDARE Seabed area 59
- CTNARE Caution area 32
- BRIDGE 21
- CBLOHD 21
- SOUNDG Sounding 17
- DAYMAR 15
- BCNLAT Lateral beacon 14
- PONTON 14
- LAKARE 13
- PILPNT 13
- DYKCON 10
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/US4SC1BM.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4SC1BM/1.0/US4SC1BM.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4SC1BM/1.0/US4SC1BM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4SC1BM/1.0/US4SC1BM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4SC1BM/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Sep 9, 2025 | metadata.json |