NOAA S-57 chart cell

Gulf of America to Blind Bay

US4LA1EQ

Usage band
Approach · code 4
Current edition
2.1
Features
1,235
S-57 layers
39
Published
May 30, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.40000° N
South
29.10000° N
West
89.10000° W
East
88.80000° W
Center
29.25000° N, 88.95000° W
Bounds area
283 sq nm
Feature density
4.3629 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
31.7
Smallest layer
1
Largest layer
303
Area sq km
971
Features per sq km
1.27201
  1. PIPSOL 303
  2. OFSPLF 246
  3. DEPCNT Depth contour 190
  4. DEPARE Depth area 123
  5. SBDARE Seabed area 91
  6. LNDARE Land area 37
  7. OBSTRN Obstruction 30
  8. RIVERS River 29
  9. COALNE Coastline 25
  10. LNDRGN Land region 22
  11. M_QUAL Data quality 18
  12. LIGHTS Light 14
  13. SOUNDG Sounding 14
  14. SEAARE Sea area 13
  15. WRECKS Wreck 11
  16. BCNLAT Lateral beacon 10
  17. LAKARE 7
  18. PILPNT 6
  19. BOYSPP Special purpose buoy 5
  20. DAYMAR 5

Nearby Chart Cells

Approach usage band

  1. Gulf of America US4LA1ER - about 16 nm away
  2. Mississippi River - Head of Passes US4LA1EP - about 16 nm away
  3. Gulf of America to Chandeleur Sound US4LA1FQ - about 18 nm away
  4. Gulf of America to Garden Island Bay US4LA1DQ - about 18 nm away
  5. Gulf of America US4LA1FR - about 24 nm away
  6. Gulf of America to Breton Sound and Chandeleur Sound US4LA1FP - 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 May 30, 2025 metadata.json