NOAA S-57 chart cell
Gulf Intracoastal Waterway - Aransas Bay and Copano Bay
US4TX1IC
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 3,509
- S-57 layers
- 48
- Published
- Dec 3, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 28.20000° N
- South
- 27.90000° N
- West
- 97.20000° W
- East
- 96.90000° W
- Center
- 28.05000° N, 97.05000° W
- Bounds area
- 286 sq nm
- Feature density
- 12.2552 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 73.1
- Smallest layer
- 1
- Largest layer
- 516
- Area sq km
- 982
- Features per sq km
- 3.57303
- SLCONS Shoreline construction 516
- DEPCNT Depth contour 414
- DEPARE Depth area 389
- COALNE Coastline 331
- LNDARE Land area 247
- OBSTRN Obstruction 161
- LNDRGN Land region 155
- SBDARE Seabed area 140
- BCNSPP Special purpose beacon 128
- DAYMAR 118
- RIVERS River 116
- PILPNT 94
- BCNLAT Lateral beacon 89
- LIGHTS Light 73
- M_QUAL Data quality 67
- RETRFL 64
- SEAARE Sea area 60
- OFSPLF 57
- LAKARE 47
- DMPGRD 44
Nearby Chart Cells
Approach usage band
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.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US4TX1IC.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4TX1IC/1.1/US4TX1IC.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4TX1IC/1.1/US4TX1IC.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TX1IC/1.1/US4TX1IC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TX1IC/1.1/US4TX1IC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TX1IC/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Dec 3, 2025 | metadata.json |