NOAA S-57 chart cell
Manokin, Wicomico and Nanticoke Rivers
US4MD1BF
- Usage band
- Approach · code 4
- Current edition
- 1.2
- Features
- 3,012
- S-57 layers
- 46
- Published
- Jun 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 38.40000° N
- South
- 38.10000° N
- West
- 75.90000° W
- East
- 75.60000° W
- Center
- 38.25000° N, 75.75000° W
- Bounds area
- 255 sq nm
- Feature density
- 11.8217 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 65.5
- Smallest layer
- 1
- Largest layer
- 485
- Area sq km
- 874
- Features per sq km
- 3.44665
- COALNE Coastline 485
- LNDRGN Land region 418
- RIVERS River 402
- DEPCNT Depth contour 275
- BUISGL 273
- DEPARE Depth area 271
- SLCONS Shoreline construction 232
- OBSTRN Obstruction 80
- SBDARE Seabed area 67
- DAYMAR 59
- BCNLAT Lateral beacon 54
- SEAARE Sea area 46
- LNDARE Land area 40
- BUAARE 37
- LIGHTS Light 36
- LAKARE 29
- PILPNT 27
- M_QUAL Data quality 23
- SOUNDG Sounding 20
- CTNARE Caution area 19
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/US4MD1BF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/US4MD1BF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/US4MD1BF.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/US4MD1BF.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/US4MD1BF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/US4MD1BF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MD1BF/1.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.2 | Jun 17, 2026 | metadata.json |