NOAA S-57 chart cell
Approaches to Calibogue Sound, Savannah River, and Wassaw Sound
US4GA1DH
- Usage band
- Approach · code 4
- Current edition
- 5.1
- Features
- 1,595
- S-57 layers
- 52
- Published
- Jun 8, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 32.10000° N
- South
- 31.80000° N
- West
- 81.00000° W
- East
- 80.70000° W
- Center
- 31.95000° N, 80.85000° W
- Bounds area
- 275 sq nm
- Feature density
- 5.7939 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 30.7
- Smallest layer
- 1
- Largest layer
- 210
- Area sq km
- 944
- Features per sq km
- 1.68924
- DEPARE Depth area 210
- DEPCNT Depth contour 208
- COALNE Coastline 189
- RIVERS River 120
- LNDRGN Land region 107
- LIGHTS Light 106
- SBDARE Seabed area 83
- LNDARE Land area 61
- BOYLAT Lateral buoy 53
- DAYMAR 52
- M_QUAL Data quality 48
- SEAARE Sea area 46
- BCNSPP Special purpose beacon 44
- SLCONS Shoreline construction 33
- BCNLAT Lateral beacon 31
- OBSTRN Obstruction 30
- SOUNDG Sounding 24
- CTNARE Caution area 15
- RETRFL 15
- C_AGGR 11
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/US4GA1DH.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4GA1DH/5.1/US4GA1DH.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4GA1DH/5.1/US4GA1DH.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4GA1DH/5.1/US4GA1DH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4GA1DH/5.1/US4GA1DH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4GA1DH/5.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 5.1 | Jun 8, 2026 | metadata.json |