NOAA S-57 chart cell
Choptank River
US4DE1BA
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 527
- S-57 layers
- 35
- Published
- Feb 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.00000° N
- South
- 38.70000° N
- West
- 75.90000° W
- East
- 75.60000° W
- Center
- 38.85000° N, 75.75000° W
- Bounds area
- 253 sq nm
- Feature density
- 2.0857 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 15.1
- Smallest layer
- 1
- Largest layer
- 155
- Area sq km
- 867
- Features per sq km
- 0.6081
- COALNE Coastline 155
- LNDRGN Land region 77
- DEPCNT Depth contour 64
- DEPARE Depth area 62
- SLCONS Shoreline construction 31
- RIVERS River 15
- BCNLAT Lateral beacon 13
- DAYMAR 13
- LNDARE Land area 12
- BOYLAT Lateral buoy 8
- M_QUAL Data quality 8
- BRIDGE 7
- SEAARE Sea area 7
- DRGARE 6
- FAIRWY Fairway 6
- LNDMRK 6
- BUAARE 5
- LAKARE 4
- CBLOHD 3
- MAGVAR Magnetic variation 3
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/US4DE1BA.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4DE1BA/1.0/US4DE1BA.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4DE1BA/1.0/US4DE1BA.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4DE1BA/1.0/US4DE1BA.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4DE1BA/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Feb 3, 2026 | metadata.json |