NOAA S-57 chart cell

Mississippi River and Barataria Bay

US4LA1FN

Usage band
Approach · code 4
Current edition
2.7
Features
2,781
S-57 layers
47
Published
May 5, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.70000° N
South
29.40000° N
West
90.00000° W
East
89.70000° W
Center
29.55000° N, 89.85000° W
Bounds area
282 sq nm
Feature density
9.8534 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
59.2
Smallest layer
1
Largest layer
610
Area sq km
968
Features per sq km
2.8728
  1. LNDRGN Land region 610
  2. COALNE Coastline 424
  3. LNDARE Land area 336
  4. RIVERS River 297
  5. LAKARE 139
  6. DEPARE Depth area 98
  7. SEAARE Sea area 92
  8. CANALS 73
  9. OBSTRN Obstruction 71
  10. DEPCNT Depth contour 64
  11. LIGHTS Light 60
  12. M_QUAL Data quality 54
  13. DAYMAR 51
  14. BCNSPP Special purpose beacon 50
  15. BCNLAT Lateral beacon 46
  16. MORFAC 44
  17. SLCONS Shoreline construction 40
  18. PILPNT 36
  19. OFSPLF 27
  20. SBDARE Seabed area 24

Nearby Chart Cells

Approach usage band

  1. Louisiana US4LA1FO - about 16 nm away
  2. Gulf Intracoastal Waterway and Lake Salvador US4LA1FM - about 16 nm away
  3. Gulf of America to Barataria Bay, Lake Grande Ecaille, and Lake Washington US4LA1EN - about 18 nm away
  4. Louisiana US4LA1GN - about 18 nm away
  5. Mississippi River - Gulf Outlet and Lake Borgne US4LA1GO - about 24 nm away
  6. Mississippi River and Gulf Intracoastal Waterway US4LA1GM - 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
2.7 May 5, 2026 metadata.json