NOAA S-57 chart cell

Portsmouth Island to Beaufort, Including Cape Lookout Shoals

US4NC16M

Usage band
Approach · code 4
Current edition
24.9
Features
2,799
S-57 layers
52
Published
Apr 9, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
35.06133° N
South
34.29050° N
West
76.71269° W
East
75.97296° W
Center
34.67591° N, 76.34283° W
Bounds area
1,690 sq nm
Feature density
1.6558 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
53.8
Smallest layer
1
Largest layer
602
Area sq km
5,798
Features per sq km
0.48276
  1. COALNE Coastline 602
  2. LNDRGN Land region 383
  3. LNDARE Land area 260
  4. DEPCNT Depth contour 241
  5. DEPARE Depth area 197
  6. RIVERS River 180
  7. SBDARE Seabed area 149
  8. DAYMAR 90
  9. BCNLAT Lateral beacon 76
  10. SEAARE Sea area 74
  11. LIGHTS Light 73
  12. SLCONS Shoreline construction 65
  13. M_QUAL Data quality 49
  14. OBSTRN Obstruction 38
  15. WRECKS Wreck 33
  16. LAKARE 27
  17. BOYSPP Special purpose buoy 25
  18. PILPNT 24
  19. BOYLAT Lateral buoy 22
  20. BCNSPP Special purpose beacon 20

Nearby Chart Cells

Approach usage band

  1. Cape Lookout to New River US4NC15M - about 29 nm away
  2. North Atlantic Ocean - Onslow Bay and Approaches to Bogue Inlet US4NC1DG - about 30 nm away
  3. North Atlantic Ocean - Onslow Bay US4NC1CG - about 36 nm away
  4. Pamlico Sound Western Part US4NC20M - about 38 nm away
  5. North Atlantic Ocean - Onslow Bay and Approaches to Bogue, Bear, Browns and New River Inlets US4NC1DF - about 45 nm away
  6. North Atlantic Ocean - Onslow Bay US4NC1CF - about 49 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
24.9 Apr 9, 2026 metadata.json