NOAA S-57 chart cell

Mobile Bay and Bon Secour Bay

US5AL1DI

Usage band
Harbor · code 5
Current edition
3.2
Features
108
S-57 layers
22
Published
Jun 3, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.37500° N
South
30.30000° N
West
87.82500° W
East
87.75000° W
Center
30.33750° N, 87.78750° W
Bounds area
18 sq nm
Feature density
6.1712 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
4.9
Smallest layer
1
Largest layer
22
Area sq km
60
Features per sq km
1.79923
  1. LIGHTS Light 22
  2. BCNSPP Special purpose beacon 21
  3. DAYMAR 20
  4. DEPARE Depth area 5
  5. LNDRGN Land region 5
  6. SLCONS Shoreline construction 5
  7. DEPCNT Depth contour 4
  8. SOUNDG Sounding 4
  9. COALNE Coastline 3
  10. M_QUAL Data quality 3
  11. M_NPUB 2
  12. RIVERS River 2
  13. SBDARE Seabed area 2
  14. SEAARE Sea area 2
  15. LNDARE Land area 1
  16. M_COVR Coverage 1
  17. M_NSYS 1
  18. MAGVAR Magnetic variation 1
  19. MARCUL 1
  20. OBSTRN Obstruction 1

Nearby Chart Cells

Harbor usage band

  1. Bon Secour River US5AL1DJ - about 4 nm away
  2. Mobile Bay and Bon Secour Bay US5AL1DH - about 4 nm away
  3. Gulf Intracoastal Waterway - Bon Secour Bay and Gulf of America US5AL1CI - about 5 nm away
  4. Gulf Intracoastal Waterway - Oyster Bay and Gulf of America US5AL1CJ - about 6 nm away
  5. Mobile Bay and Gulf Intracoastal Waterway US5AL1CH - about 6 nm away
  6. Gulf Intracoastal Waterway - Portage Creek and Wolf Bay US5AL1DK - about 8 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
3.2 Jun 3, 2026 metadata.json