NOAA S-57 chart cell

Galveston Bay and Trinity Bay

US4TX1NJ

Usage band
Approach · code 4
Current edition
7.4
Features
5,193
S-57 layers
62
Published
Jun 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
95.10000° W
East
94.80000° W
Center
29.55000° N, 94.95000° W
Bounds area
282 sq nm
Feature density
18.3995 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
83.8
Smallest layer
1
Largest layer
1,296
Area sq km
968
Features per sq km
5.36442
  1. SLCONS Shoreline construction 1,296
  2. COALNE Coastline 397
  3. PILPNT 395
  4. OBSTRN Obstruction 346
  5. DEPCNT Depth contour 240
  6. SBDARE Seabed area 220
  7. OFSPLF 209
  8. DEPARE Depth area 207
  9. LIGHTS Light 160
  10. DAYMAR 147
  11. M_QUAL Data quality 134
  12. LNDRGN Land region 130
  13. BCNSPP Special purpose beacon 123
  14. RIVERS River 114
  15. BCNLAT Lateral beacon 109
  16. BUISGL 73
  17. LNDARE Land area 63
  18. MORFAC 60
  19. DMPGRD 54
  20. ROADWY 53

Nearby Chart Cells

Approach usage band

  1. Gulf Intracoastal Waterway - Galveston Bay, East Bay, Trinity Bay to Gulf of America US4TX1NK - about 16 nm away
  2. Texas - Clear Creek US4TX1NI - about 16 nm away
  3. Gulf Intracoastal Waterway - Galveston Bay, West Bay to Gulf of America US4TX1MJ - about 18 nm away
  4. Trinity Bay to San Jacinto River US4TX1OJ - about 18 nm away
  5. Trinity Bay to Lake Anahuac US4TX1OK - about 24 nm away
  6. Texas - Buffalo Bayou US4TX1OI - 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
7.4 Jun 15, 2026 metadata.json