NOAA S-57 chart cell

Gulf of America

US4LA1EF

Usage band
Approach · code 4
Current edition
1.1
Features
250
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
92.40000° W
East
92.10000° W
Center
29.25000° N, 92.25000° W
Bounds area
283 sq nm
Feature density
0.8832 / sq nm

Chart Statistics

19 largest layers shown

Average features per layer
13.2
Smallest layer
1
Largest layer
121
Area sq km
971
Features per sq km
0.25749
  1. PIPSOL 121
  2. SBDARE Seabed area 39
  3. OFSPLF 15
  4. DEPARE Depth area 14
  5. DEPCNT Depth contour 13
  6. SOUNDG Sounding 13
  7. OBSTRN Obstruction 12
  8. M_QUAL Data quality 9
  9. SEAARE Sea area 3
  10. MAGVAR Magnetic variation 2
  11. BRIDGE 1
  12. CBLSUB 1
  13. CONZNE 1
  14. EXEZNE 1
  15. FAIRWY Fairway 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 US4LA1EE - about 16 nm away
  2. Gulf of America US4LA1EG - about 16 nm away
  3. Gulf of America and Freshwater Bayou Canal US4LA1FF - about 18 nm away
  4. Gulf of America to Southwest Pass, Vermilion Bay, and West Cote Blanche Bay US4LA1FG - about 24 nm away
  5. Gulf of America to White Lake US4LA1FE - about 24 nm away
  6. Gulf of America US4LA1ED - 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
1.1 Mar 26, 2025 metadata.json