NOAA S-57 chart cell
Chesapeake Bay - Middle River and Gunpowder River
US5BALDD
- Usage band
- Harbor · code 5
- Current edition
- 1.0
- Features
- 1,076
- S-57 layers
- 39
- Published
- Jul 21, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.37500° N
- South
- 39.30000° N
- West
- 76.42500° W
- East
- 76.35000° W
- Center
- 39.33750° N, 76.38750° W
- Bounds area
- 16 sq nm
- Feature density
- 68.6092 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 27.6
- Smallest layer
- 1
- Largest layer
- 601
- Area sq km
- 54
- Features per sq km
- 20.00323
- SLCONS Shoreline construction 601
- COALNE Coastline 121
- LNDRGN Land region 73
- DEPARE Depth area 46
- DEPCNT Depth contour 39
- SEAARE Sea area 23
- PILPNT 21
- M_QUAL Data quality 20
- OBSTRN Obstruction 19
- LNDARE Land area 14
- SOUNDG Sounding 11
- SBDARE Seabed area 9
- DAYMAR 8
- RIVERS River 8
- BCNLAT Lateral beacon 7
- DRGARE 7
- M_NPUB 5
- CTNARE Caution area 4
- WRECKS Wreck 4
- BCNSPP Special purpose beacon 3
Nearby Chart Cells
Harbor 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/US5BALDD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5BALDD/1.0/US5BALDD.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5BALDD/1.0/US5BALDD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5BALDD/1.0/US5BALDD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5BALDD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 21, 2023 | metadata.json |