NOAA S-57 chart cell

Approaches to Calcasieu Pass - Sabine Bank

US4LA1FB

Usage band
Approach · code 4
Current edition
1.3
Features
474
S-57 layers
34
Published
Apr 15, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.70000° N
South
29.40000° N
West
93.60000° W
East
93.30000° W
Center
29.55000° N, 93.45000° W
Bounds area
282 sq nm
Feature density
1.6794 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
13.9
Smallest layer
1
Largest layer
174
Area sq km
968
Features per sq km
0.48965
  1. PIPSOL 174
  2. SBDARE Seabed area 70
  3. OFSPLF 60
  4. OBSTRN Obstruction 27
  5. M_QUAL Data quality 20
  6. SOUNDG Sounding 18
  7. LIGHTS Light 16
  8. BOYLAT Lateral buoy 14
  9. WRECKS Wreck 13
  10. DEPARE Depth area 12
  11. DEPCNT Depth contour 11
  12. SEAARE Sea area 6
  13. ACHARE Anchorage area 4
  14. MAGVAR Magnetic variation 4
  15. FAIRWY Fairway 3
  16. BOYSPP Special purpose buoy 2
  17. DMPGRD 2
  18. RTPBCN 2
  19. ADMARE 1
  20. BRIDGE 1

Nearby Chart Cells

Approach usage band

  1. Approaches to Calcasieu Pass - Mermentau River Channel US4LA1FC - about 16 nm away
  2. Approaches to Sabine Pass - Sabine Bank US4LA1FA - about 16 nm away
  3. Gulf of America US4LA1EB - about 18 nm away
  4. Gulf of America to Calcasieu Pass and Calcasieu Lake US4LA1GB - about 18 nm away
  5. Gulf Intracoastal Waterway - Gulf of America and Calcasieu Lake, Mermentau River US4LA1GC - about 24 nm away
  6. Gulf Intracoastal Waterway - Sabine Lake and Sabine Passage US4LA1GA - 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
1.3 Apr 15, 2026 metadata.json