NOAA S-57 chart cell
North Atlantic Ocean - Approaches to Delaware Bay
US4DE1AD
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 350
- S-57 layers
- 28
- Published
- May 21, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 38.70000° N
- South
- 38.40000° N
- West
- 75.00000° W
- East
- 74.70000° W
- Center
- 38.55000° N, 74.85000° W
- Bounds area
- 254 sq nm
- Feature density
- 1.3794 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 12.5
- Smallest layer
- 1
- Largest layer
- 96
- Area sq km
- 870
- Features per sq km
- 0.40217
- SBDARE Seabed area 96
- DEPARE Depth area 74
- DEPCNT Depth contour 70
- M_QUAL Data quality 19
- OBSTRN Obstruction 18
- WRECKS Wreck 15
- SOUNDG Sounding 14
- SEAARE Sea area 7
- LIGHTS Light 4
- UWTROC Underwater rock 4
- BOYSPP Special purpose buoy 3
- M_NPUB 3
- MAGVAR Magnetic variation 3
- ACHARE Anchorage area 2
- CTNARE Caution area 2
- RESARE 2
- TSSBND 2
- TSSLPT 2
- ADMARE 1
- BOYLAT Lateral buoy 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/US4DE1AD.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4DE1AD/1.1/US4DE1AD.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4DE1AD/1.1/US4DE1AD.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4DE1AD/1.1/US4DE1AD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4DE1AD/1.1/US4DE1AD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4DE1AD/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 21, 2026 | metadata.json |