NOAA S-57 chart cell
North Atlantic Ocean - Approaches to Winyah Bay
US4SC1DR
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 471
- S-57 layers
- 41
- Published
- Mar 18, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 33.30000° N
- South
- 33.00000° N
- West
- 79.20000° W
- East
- 78.90000° W
- Center
- 33.15000° N, 79.05000° W
- Bounds area
- 272 sq nm
- Feature density
- 1.734 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.5
- Smallest layer
- 1
- Largest layer
- 110
- Area sq km
- 932
- Features per sq km
- 0.50554
- DEPARE Depth area 110
- DEPCNT Depth contour 107
- SBDARE Seabed area 60
- RIVERS River 27
- LIGHTS Light 20
- COALNE Coastline 18
- M_QUAL Data quality 16
- OBSTRN Obstruction 12
- SEAARE Sea area 12
- BOYLAT Lateral buoy 11
- LNDARE Land area 8
- CTNARE Caution area 7
- BOYSPP Special purpose buoy 6
- LNDRGN Land region 6
- WRECKS Wreck 5
- BCNSPP Special purpose beacon 4
- SLCONS Shoreline construction 4
- RESARE 3
- SOUNDG Sounding 3
- C_AGGR 2
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/US4SC1DR.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4SC1DR/1.1/US4SC1DR.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4SC1DR/1.1/US4SC1DR.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4SC1DR/1.1/US4SC1DR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4SC1DR/1.1/US4SC1DR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4SC1DR/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Mar 18, 2026 | metadata.json |