NOAA S-57 chart cell
Gunpowder River
US5BALDE
- Usage band
- Harbor · code 5
- Current edition
- 1.1
- Features
- 521
- S-57 layers
- 29
- Published
- Sep 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.37500° N
- South
- 39.30000° N
- West
- 76.35000° W
- East
- 76.27500° W
- Center
- 39.33750° N, 76.31250° W
- Bounds area
- 16 sq nm
- Feature density
- 33.2206 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 18
- Smallest layer
- 1
- Largest layer
- 93
- Area sq km
- 54
- Features per sq km
- 9.68558
- COALNE Coastline 93
- SLCONS Shoreline construction 80
- DEPARE Depth area 64
- LNDRGN Land region 61
- DEPCNT Depth contour 54
- OBSTRN Obstruction 31
- SBDARE Seabed area 22
- RIVERS River 18
- SEAARE Sea area 17
- M_QUAL Data quality 15
- RESARE 11
- LNDARE Land area 9
- PILPNT 9
- CTNARE Caution area 5
- LIGHTS Light 4
- WEDKLP 4
- BOYLAT Lateral buoy 3
- BRIDGE 3
- LNDMRK 3
- SOUNDG Sounding 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/US5BALDE.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/harbor/US5BALDE/1.1/US5BALDE.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/harbor/US5BALDE/1.1/US5BALDE.001
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5BALDE/1.1/US5BALDE.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5BALDE/1.1/US5BALDE.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5BALDE/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Sep 29, 2025 | metadata.json |