NOAA S-57 chart cell

Mississippi River - Gulf Outlet and Lake Borgne

US4LA1GO

Usage band
Approach · code 4
Current edition
1.4
Features
2,645
S-57 layers
44
Published
Jan 15, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.00000° N
South
29.70000° N
West
89.70000° W
East
89.40000° W
Center
29.85000° N, 89.55000° W
Bounds area
281 sq nm
Feature density
9.3996 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
60.1
Smallest layer
1
Largest layer
749
Area sq km
965
Features per sq km
2.74049
  1. COALNE Coastline 749
  2. LNDRGN Land region 609
  3. LNDARE Land area 588
  4. SEAARE Sea area 121
  5. SLCONS Shoreline construction 87
  6. RIVERS River 84
  7. BCNSPP Special purpose beacon 67
  8. LIGHTS Light 55
  9. LAKARE 50
  10. M_QUAL Data quality 31
  11. DEPARE Depth area 26
  12. DAYMAR 21
  13. OBSTRN Obstruction 21
  14. SBDARE Seabed area 19
  15. DYKCON 16
  16. CTNARE Caution area 15
  17. DEPCNT Depth contour 11
  18. CANALS 8
  19. CBLOHD 8
  20. BCNLAT Lateral beacon 7

Nearby Chart Cells

Approach usage band

  1. Louisiana US4LA1GN - about 16 nm away
  2. Chandeleur Sound and Eloi Bay US4LA1GP - about 16 nm away
  3. Gulf Intracoastal Waterway - Pearl River to Lake Borgne US4LA1HP - about 18 nm away
  4. Louisiana US4LA1FO - about 18 nm away
  5. Gulf Intracoastal Waterway - Lake Borgne and Lake Pontchartrain US4LA1HO - about 24 nm away
  6. Gulf Intracoastal Waterway - Mississippi Sound to Chandeleur Sound US4LA1HQ - 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
1.4 Jan 15, 2025 metadata.json