NOAA S-57 chart cell
Chesapeake Bay - Kent Island to Pooles Island
US4MD1ED
- Usage band
- Approach · code 4
- Current edition
- 1.10
- Features
- 2,039
- S-57 layers
- 54
- Published
- Jun 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.30000° N
- South
- 39.00000° N
- West
- 76.50000° W
- East
- 76.20000° W
- Center
- 39.15000° N, 76.35000° W
- Bounds area
- 252 sq nm
- Feature density
- 8.1041 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 37.8
- Smallest layer
- 1
- Largest layer
- 301
- Area sq km
- 863
- Features per sq km
- 2.36279
- SLCONS Shoreline construction 301
- DEPARE Depth area 200
- LIGHTS Light 190
- DEPCNT Depth contour 185
- BOYLAT Lateral buoy 151
- COALNE Coastline 127
- LNDRGN Land region 104
- SBDARE Seabed area 100
- OBSTRN Obstruction 94
- M_QUAL Data quality 67
- SEAARE Sea area 51
- LNDARE Land area 47
- RIVERS River 37
- SOUNDG Sounding 32
- DAYMAR 31
- WRECKS Wreck 31
- CTNARE Caution area 30
- BCNLAT Lateral beacon 27
- BCNSPP Special purpose beacon 23
- LAKARE 21
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/US4MD1ED.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.002
- S-57 update 003 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.003
- S-57 update 004 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.004
- S-57 update 005 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.005
- S-57 update 006 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.006
- S-57 update 007 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.007
- S-57 update 008 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.008
- S-57 update 009 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.009
- S-57 update 010 https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.010
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/US4MD1ED.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MD1ED/1.10/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.10 | Jun 17, 2026 | metadata.json |