NOAA S-57 chart cell

Gulf of America

US4LA1EG

Usage band
Approach · code 4
Current edition
1.1
Features
393
S-57 layers
19
Published
Mar 26, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.40000° N
South
29.10000° N
West
92.10000° W
East
91.80000° W
Center
29.25000° N, 91.95000° W
Bounds area
283 sq nm
Feature density
1.3883 / sq nm

Chart Statistics

19 largest layers shown

Average features per layer
20.7
Smallest layer
1
Largest layer
199
Area sq km
971
Features per sq km
0.40478
  1. PIPSOL 199
  2. SBDARE Seabed area 54
  3. OFSPLF 53
  4. SOUNDG Sounding 21
  5. M_QUAL Data quality 15
  6. OBSTRN Obstruction 14
  7. DEPARE Depth area 11
  8. DEPCNT Depth contour 11
  9. SEAARE Sea area 3
  10. MAGVAR Magnetic variation 2
  11. WRECKS Wreck 2
  12. ADMARE 1
  13. CONZNE 1
  14. CTNARE Caution area 1
  15. EXEZNE 1
  16. M_COVR Coverage 1
  17. M_NPUB 1
  18. M_NSYS 1
  19. TESARE 1

Nearby Chart Cells

Approach usage band

  1. Gulf of America US4LA1EH - about 16 nm away
  2. Gulf of America US4LA1EF - about 16 nm away
  3. Gulf of America to Southwest Pass, Vermilion Bay, and West Cote Blanche Bay US4LA1FG - about 18 nm away
  4. East Cote Blanche Bay and Atchafalaya Bay US4LA1FH - about 24 nm away
  5. Gulf of America and Freshwater Bayou Canal US4LA1FF - about 24 nm away
  6. Gulf of America US4LA1DH - about 24 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
1.1 Mar 26, 2025 metadata.json