NOAA S-57 chart cell
Chester River
US4DE1CA
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 116
- S-57 layers
- 20
- Published
- Feb 3, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.30000° N
- South
- 39.00000° N
- West
- 75.90000° W
- East
- 75.60000° W
- Center
- 39.15000° N, 75.75000° W
- Bounds area
- 252 sq nm
- Feature density
- 0.461 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 5.8
- Smallest layer
- 1
- Largest layer
- 33
- Area sq km
- 863
- Features per sq km
- 0.13442
- COALNE Coastline 33
- DEPARE Depth area 16
- DEPCNT Depth contour 14
- LNDRGN Land region 11
- LNDARE Land area 7
- BOYSPP Special purpose buoy 5
- BRIDGE 4
- CBLOHD 4
- SLCONS Shoreline construction 4
- CTNARE Caution area 3
- M_QUAL Data quality 3
- MAGVAR Magnetic variation 2
- RIVERS River 2
- SOUNDG Sounding 2
- BUISGL 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- RESARE 1
- SEAARE Sea area 1
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/US4DE1CA.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4DE1CA/1.0/US4DE1CA.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4DE1CA/1.0/US4DE1CA.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4DE1CA/1.0/US4DE1CA.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4DE1CA/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Feb 3, 2026 | metadata.json |