NOAA S-57 chart cell
Port Royal Sound to Broad River and Calibogue Sound
US4SC1AL
- Usage band
- Approach · code 4
- Current edition
- 5.1
- Features
- 3,691
- S-57 layers
- 47
- Published
- Nov 12, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 32.40000° N
- South
- 32.10000° N
- West
- 81.00000° W
- East
- 80.70000° W
- Center
- 32.25000° N, 80.85000° W
- Bounds area
- 274 sq nm
- Feature density
- 13.4519 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 78.5
- Smallest layer
- 1
- Largest layer
- 654
- Area sq km
- 941
- Features per sq km
- 3.92193
- DEPARE Depth area 654
- DEPCNT Depth contour 622
- RIVERS River 561
- COALNE Coastline 513
- LNDRGN Land region 302
- LNDARE Land area 205
- SLCONS Shoreline construction 198
- DAYMAR 81
- BCNLAT Lateral beacon 79
- SBDARE Seabed area 69
- LIGHTS Light 46
- SEAARE Sea area 45
- RETRFL 31
- M_QUAL Data quality 29
- CTNARE Caution area 26
- BCNSPP Special purpose beacon 23
- OBSTRN Obstruction 22
- PILPNT 21
- SLOTOP 17
- SOUNDG Sounding 17
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/US4SC1AL.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4SC1AL/5.1/US4SC1AL.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4SC1AL/5.1/US4SC1AL.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4SC1AL/5.1/US4SC1AL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4SC1AL/5.1/US4SC1AL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4SC1AL/5.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 5.1 | Nov 12, 2025 | metadata.json |