NOAA S-57 chart cell
Dogue Creek and Potomac River
US4VA1HB
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 146
- S-57 layers
- 22
- Published
- Apr 2, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.00000° N
- South
- 38.70000° N
- West
- 77.40000° W
- East
- 77.10000° W
- Center
- 38.85000° N, 77.25000° W
- Bounds area
- 253 sq nm
- Feature density
- 0.5778 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.6
- Smallest layer
- 1
- Largest layer
- 35
- Area sq km
- 867
- Features per sq km
- 0.16847
- SLCONS Shoreline construction 35
- DEPARE Depth area 20
- UWTROC Underwater rock 16
- DEPCNT Depth contour 14
- COALNE Coastline 10
- OBSTRN Obstruction 9
- LNDRGN Land region 7
- RIVERS River 6
- BUAARE 5
- M_QUAL Data quality 4
- SEAARE Sea area 4
- SOUNDG Sounding 3
- BRIDGE 2
- LNDARE Land area 2
- MAGVAR Magnetic variation 2
- BUISGL 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- PILPNT 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/US4VA1HB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4VA1HB/1.0/US4VA1HB.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4VA1HB/1.0/US4VA1HB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4VA1HB/1.0/US4VA1HB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4VA1HB/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 2, 2026 | metadata.json |