NOAA S-57 chart cell
North Atlantic Ocean - Onslow Bay and Approaches to Bogue, Bear, Browns and New River Inlets
US4NC1DF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,219
- S-57 layers
- 37
- Published
- Mar 11, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 34.80000° N
- South
- 34.50000° N
- West
- 77.40000° W
- East
- 77.10000° W
- Center
- 34.65000° N, 77.25000° W
- Bounds area
- 267 sq nm
- Feature density
- 4.5673 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 32.9
- Smallest layer
- 1
- Largest layer
- 379
- Area sq km
- 915
- Features per sq km
- 1.33162
- LNDARE Land area 379
- COALNE Coastline 323
- LNDRGN Land region 174
- RIVERS River 86
- SLCONS Shoreline construction 60
- DEPARE Depth area 28
- DEPCNT Depth contour 28
- SEAARE Sea area 23
- LAKARE 20
- SBDARE Seabed area 16
- CTNARE Caution area 14
- SOUNDG Sounding 14
- M_QUAL Data quality 8
- WATTUR 6
- BRIDGE 4
- BUAARE 4
- DMPGRD 3
- SILTNK 3
- BUISGL 2
- CBLOHD 2
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/US4NC1DF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4NC1DF/1.0/US4NC1DF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4NC1DF/1.0/US4NC1DF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4NC1DF/1.0/US4NC1DF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4NC1DF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 11, 2026 | metadata.json |