NOAA S-57 chart cell
Little River Inlet to Winyah Bay Entrance
US4SC20M
- Usage band
- Approach · code 4
- Current edition
- 23.0
- Features
- 788
- S-57 layers
- 46
- Published
- Feb 9, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 33.91064° N
- South
- 33.15778° N
- West
- 79.21147° W
- East
- 78.48906° W
- Center
- 33.53421° N, 78.85027° W
- Bounds area
- 1,634 sq nm
- Feature density
- 0.4822 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.1
- Smallest layer
- 1
- Largest layer
- 155
- Area sq km
- 5,605
- Features per sq km
- 0.14058
- COALNE Coastline 155
- SBDARE Seabed area 144
- LNDRGN Land region 94
- LNDARE Land area 68
- DEPARE Depth area 58
- DEPCNT Depth contour 56
- SLCONS Shoreline construction 44
- RIVERS River 16
- BRIDGE 12
- SEAARE Sea area 12
- SILTNK 12
- LIGHTS Light 11
- M_QUAL Data quality 11
- CBLOHD 10
- LAKARE 7
- LNDMRK 7
- BOYSPP Special purpose buoy 6
- WRECKS Wreck 6
- BCNSPP Special purpose beacon 5
- BUAARE 5
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/US4SC20M.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4SC20M/23.0/US4SC20M.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4SC20M/23.0/US4SC20M.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4SC20M/23.0/US4SC20M.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4SC20M/23.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 23.0 | Feb 9, 2026 | metadata.json |