NOAA S-57 chart cell

Gulf Intracoastal Waterway - Galveston Bay, East Bay, Trinity Bay to Gulf of America

US4TX1NK

Usage band
Approach · code 4
Current edition
3.3
Features
2,056
S-57 layers
55
Published
Mar 24, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.70000° N
South
29.40000° N
West
94.80000° W
East
94.50000° W
Center
29.55000° N, 94.65000° W
Bounds area
282 sq nm
Feature density
7.2847 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
37.4
Smallest layer
1
Largest layer
256
Area sq km
968
Features per sq km
2.12387
  1. COALNE Coastline 256
  2. SLCONS Shoreline construction 208
  3. DEPCNT Depth contour 183
  4. DEPARE Depth area 182
  5. OBSTRN Obstruction 164
  6. LNDRGN Land region 135
  7. BCNSPP Special purpose beacon 108
  8. LNDARE Land area 102
  9. RIVERS River 98
  10. SBDARE Seabed area 92
  11. M_QUAL Data quality 59
  12. PILPNT 56
  13. LAKARE 49
  14. DMPGRD 35
  15. UNSARE 35
  16. SEAARE Sea area 29
  17. BUISGL 26
  18. DAYMAR 26
  19. OFSPLF 23
  20. WRECKS Wreck 21

Nearby Chart Cells

Approach usage band

  1. Galveston Bay and Trinity Bay US4TX1NJ - about 16 nm away
  2. Gulf Intracoastal Waterway - East Bay to Gulf of America US4TX1NL - about 16 nm away
  3. Approaches to Galveston Bay US4TX1MK - about 18 nm away
  4. Trinity Bay to Lake Anahuac US4TX1OK - about 18 nm away
  5. Trinity Bay to San Jacinto River US4TX1OJ - about 24 nm away
  6. Gulf Intracoastal Waterway - Galveston Bay, West Bay to Gulf of America US4TX1MJ - 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
3.3 Mar 24, 2026 metadata.json