NOAA S-57 chart cell

Gulf Intracoastal Waterway - Calcasieu River and Calcasieu Lake

US4LA1HB

Usage band
Approach · code 4
Current edition
2.6
Features
1,423
S-57 layers
52
Published
Apr 23, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.30000° N
South
30.00000° N
West
93.60000° W
East
93.30000° W
Center
30.15000° N, 93.45000° W
Bounds area
281 sq nm
Feature density
5.0723 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
27.4
Smallest layer
1
Largest layer
275
Area sq km
962
Features per sq km
1.47883
  1. COALNE Coastline 275
  2. LNDRGN Land region 155
  3. DEPARE Depth area 124
  4. SLCONS Shoreline construction 113
  5. DEPCNT Depth contour 96
  6. LIGHTS Light 75
  7. LNDARE Land area 56
  8. BCNLAT Lateral beacon 53
  9. DAYMAR 42
  10. RIVERS River 39
  11. OFSPLF 34
  12. SILTNK 32
  13. M_QUAL Data quality 30
  14. BCNSPP Special purpose beacon 27
  15. PILPNT 22
  16. OBSTRN Obstruction 20
  17. CBLOHD 19
  18. LAKARE 18
  19. PIPARE 17
  20. SEAARE Sea area 17

Nearby Chart Cells

Approach usage band

  1. Gulf Intracoastal Waterway - Calcasieu River and Calcasieu Lake US4LA1HC - about 16 nm away
  2. Gulf Intracoastal Waterway - Sabine River and Cow Bayou US4TX1PN - about 16 nm away
  3. Gulf of America to Calcasieu Pass and Calcasieu Lake US4LA1GB - about 18 nm away
  4. Calcasieu River US4LA1IC - about 24 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
2.6 Apr 23, 2026 metadata.json