NOAA S-57 chart cell

North Atlantic Ocean - Onslow Bay

US4NC1CG

Usage band
Approach · code 4
Current edition
1.0
Features
33
S-57 layers
19
Published
Mar 11, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
34.50000° N
South
34.20000° N
West
77.10000° W
East
76.80000° W
Center
34.35000° N, 76.95000° W
Bounds area
268 sq nm
Feature density
0.1232 / sq nm

Chart Statistics

19 largest layers shown

Average features per layer
1.7
Smallest layer
1
Largest layer
5
Area sq km
919
Features per sq km
0.03592
  1. SBDARE Seabed area 5
  2. BOYSPP Special purpose buoy 3
  3. LIGHTS Light 3
  4. SOUNDG Sounding 3
  5. DEPARE Depth area 2
  6. M_QUAL Data quality 2
  7. MAGVAR Magnetic variation 2
  8. SEAARE Sea area 2
  9. CONZNE 1
  10. COSARE 1
  11. DEPCNT Depth contour 1
  12. EXEZNE 1
  13. M_COVR Coverage 1
  14. M_NPUB 1
  15. M_NSYS 1
  16. MIPARE 1
  17. RESARE 1
  18. TESARE 1
  19. WRECKS Wreck 1

Nearby Chart Cells

Approach usage band

  1. North Atlantic Ocean - Onslow Bay US4NC1CF - about 15 nm away
  2. Cape Lookout to New River US4NC15M - about 16 nm away
  3. North Atlantic Ocean - Onslow Bay and Approaches to Bogue Inlet US4NC1DG - about 18 nm away
  4. North Atlantic Ocean - Onslow Bay and Approaches to Bogue, Bear, Browns and New River Inlets US4NC1DF - about 23 nm away
  5. North Atlantic Ocean US4NC1BF - about 23 nm away
  6. North Atlantic Ocean - Onslow Bay and Approaches to New Topsail Inlet US4NC1CE - about 30 nm away

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.

Editions

Edition Published Metadata
1.0 Mar 11, 2026 metadata.json