NOAA S-57 chart cell
Approaches to Savannah River and Calibogue Sound
US4GA1DI
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 267
- S-57 layers
- 27
- Published
- Jul 15, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 32.10000° N
- South
- 31.80000° N
- West
- 80.70000° W
- East
- 80.40000° W
- Center
- 31.95000° N, 80.55000° W
- Bounds area
- 275 sq nm
- Feature density
- 0.9699 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 9.9
- Smallest layer
- 1
- Largest layer
- 61
- Area sq km
- 944
- Features per sq km
- 0.28278
- DEPCNT Depth contour 61
- DEPARE Depth area 58
- SBDARE Seabed area 33
- OBSTRN Obstruction 28
- M_QUAL Data quality 23
- SOUNDG Sounding 13
- LIGHTS Light 7
- BOYLAT Lateral buoy 6
- WRECKS Wreck 5
- BOYSPP Special purpose buoy 4
- MAGVAR Magnetic variation 4
- SEAARE Sea area 4
- PILBOP 3
- DMPGRD 2
- FAIRWY Fairway 2
- M_NPUB 2
- RESARE 2
- BOYSAW 1
- CONZNE 1
- CTNARE Caution area 1
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/US4GA1DI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4GA1DI/2.0/US4GA1DI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4GA1DI/2.0/US4GA1DI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4GA1DI/2.0/US4GA1DI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4GA1DI/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jul 15, 2025 | metadata.json |