NOAA S-57 chart cell

Gulf of America

US4LA1DI

Usage band
Approach · code 4
Current edition
2.1
Features
664
S-57 layers
20
Published
Mar 18, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.10000° N
South
28.80000° N
West
91.50000° W
East
91.20000° W
Center
28.95000° N, 91.35000° W
Bounds area
284 sq nm
Feature density
2.3389 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
33.2
Smallest layer
1
Largest layer
480
Area sq km
974
Features per sq km
0.68191
  1. PIPSOL 480
  2. SBDARE Seabed area 69
  3. OFSPLF 24
  4. DEPARE Depth area 19
  5. M_QUAL Data quality 19
  6. DEPCNT Depth contour 18
  7. SOUNDG Sounding 12
  8. OBSTRN Obstruction 8
  9. WRECKS Wreck 3
  10. MAGVAR Magnetic variation 2
  11. CONZNE 1
  12. CTNARE Caution area 1
  13. EXEZNE 1
  14. LNDARE Land area 1
  15. LNDMRK 1
  16. M_COVR Coverage 1
  17. M_NPUB 1
  18. M_NSYS 1
  19. SEAARE Sea area 1
  20. TESARE 1

Nearby Chart Cells

Approach usage band

  1. Gulf of America to Caillou Bay US4LA1DJ - about 16 nm away
  2. Gulf of America US4LA1DH - about 16 nm away
  3. Gulf of America to Atchafalaya Bay US4LA1EI - about 18 nm away
  4. Gulf of America US4LA1CI - about 18 nm away
  5. Gulf of America to Fourleague Bay, Caillou Bay, Caillou Lake, and Lake Merchant US4LA1EJ - about 24 nm away
  6. Gulf of America US4LA1EH - 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
2.1 Mar 18, 2025 metadata.json