NOAA S-57 chart cell

Chandeleur Sound

US4LA1GQ

Usage band
Approach · code 4
Current edition
1.1
Features
825
S-57 layers
24
Published
May 30, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.00000° N
South
29.70000° N
West
89.10000° W
East
88.80000° W
Center
29.85000° N, 88.95000° W
Bounds area
281 sq nm
Feature density
2.9318 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
34.4
Smallest layer
1
Largest layer
171
Area sq km
965
Features per sq km
0.85478
  1. DEPCNT Depth contour 171
  2. COALNE Coastline 158
  3. DEPARE Depth area 131
  4. LNDARE Land area 121
  5. LNDRGN Land region 62
  6. SBDARE Seabed area 55
  7. SLCONS Shoreline construction 23
  8. M_QUAL Data quality 17
  9. OFSPLF 12
  10. WRECKS Wreck 12
  11. PIPSOL 10
  12. WATTUR 9
  13. CTNARE Caution area 8
  14. SEAARE Sea area 8
  15. SOUNDG Sounding 8
  16. OBSTRN Obstruction 6
  17. ADMARE 3
  18. C_ASSO 3
  19. MAGVAR Magnetic variation 2
  20. PILPNT 2

Nearby Chart Cells

Approach usage band

  1. Gulf of America US4LA1GR - about 16 nm away
  2. Chandeleur Sound and Eloi Bay US4LA1GP - about 16 nm away
  3. Chandeleur Sound to Mississippi Sound and Gulf of America US4MS1BE - about 18 nm away
  4. Gulf of America to Chandeleur Sound US4LA1FQ - about 18 nm away
  5. Gulf of America to Biloxi Bay and Pascagoula Bay Approaches US4MS1BF - 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
1.1 May 30, 2025 metadata.json