NOAA S-57 chart cell

Approaches to Winyah Bay

US4SC31M

Usage band
Approach · code 4
Current edition
30.0
Features
106
S-57 layers
17
Published
Feb 9, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
33.44205° N
South
32.83962° N
West
79.63469° W
East
78.66482° W
Center
33.14084° N, 79.14975° W
Bounds area
1,764 sq nm
Feature density
0.0601 / sq nm

Chart Statistics

17 largest layers shown

Average features per layer
6.2
Smallest layer
1
Largest layer
34
Area sq km
6,049
Features per sq km
0.01752
  1. SBDARE Seabed area 34
  2. DEPARE Depth area 21
  3. DEPCNT Depth contour 19
  4. OBSTRN Obstruction 7
  5. M_QUAL Data quality 5
  6. SOUNDG Sounding 4
  7. BOYSPP Special purpose buoy 2
  8. M_COVR Coverage 2
  9. MAGVAR Magnetic variation 2
  10. RESARE 2
  11. TESARE 2
  12. CONZNE 1
  13. COSARE 1
  14. EXEZNE 1
  15. M_NPUB 1
  16. M_NSYS 1
  17. SEAARE Sea area 1

Nearby Chart Cells

Approach usage band

  1. North Atlantic Ocean - Approaches to Winyah Bay US4SC1DR - about 5 nm away
  2. North Atlantic Ocean US4SC1DQ - about 10 nm away
  3. North Atlantic Ocean US4SC1CR - about 18 nm away
  4. North Atlantic Ocean - Long Bay and Approaches to Murrells Inlet US4SC1ER - about 19 nm away
  5. North Atlantic Ocean US4SC1CQ - about 20 nm away
  6. North Atlantic Ocean - Bulls Bay US4SC1DP - about 25 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
30.0 Feb 9, 2026 metadata.json