NOAA S-57 chart cell

North Atlantic Ocean

US4GA1BH

Usage band
Approach · code 4
Current edition
1.0
Features
89
S-57 layers
20
Published
Mar 24, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
31.50000° N
South
31.20000° N
West
81.00000° W
East
80.70000° W
Center
31.35000° N, 80.85000° W
Bounds area
277 sq nm
Feature density
0.3212 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
4.5
Smallest layer
1
Largest layer
36
Area sq km
950
Features per sq km
0.09365
  1. SBDARE Seabed area 36
  2. DEPARE Depth area 8
  3. M_QUAL Data quality 8
  4. SOUNDG Sounding 8
  5. DEPCNT Depth contour 6
  6. RESARE 6
  7. OBSTRN Obstruction 4
  8. BOYSPP Special purpose buoy 1
  9. CONZNE 1
  10. CTNARE Caution area 1
  11. EXEZNE 1
  12. LIGHTS Light 1
  13. M_COVR Coverage 1
  14. M_NPUB 1
  15. M_NSYS 1
  16. MAGVAR Magnetic variation 1
  17. MIPARE 1
  18. SEAARE Sea area 1
  19. TESARE 1
  20. WRECKS Wreck 1

Nearby Chart Cells

Approach usage band

  1. Approaches to Doboy Sound and Altamaha Sound - North Atlantic Ocean US4GA1BG - about 15 nm away
  2. Approaches to Ossabaw Sound - North Atlantic Ocean US4GA1CH - about 18 nm away
  3. Approaches to Brunswick River US4GA1AH - about 18 nm away
  4. Approaches to Saint Catherines Sound and Sapelo Sound US4GA1CG - about 24 nm away
  5. Approaches to Brunswick River US4GA1AG - about 24 nm away
  6. Altamaha River US4GA1BF - about 31 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 24, 2025 metadata.json