NOAA S-57 chart cell
Gulf Intracoastal Waterway - San Bernard River and Gulf of America
US4TX1LH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 639
- S-57 layers
- 38
- Published
- Mar 13, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.10000° N
- South
- 28.80000° N
- West
- 95.70000° W
- East
- 95.40000° W
- Center
- 28.95000° N, 95.55000° W
- Bounds area
- 284 sq nm
- Feature density
- 2.2508 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 16.8
- Smallest layer
- 1
- Largest layer
- 122
- Area sq km
- 974
- Features per sq km
- 0.65623
- COALNE Coastline 122
- RIVERS River 61
- DEPARE Depth area 60
- DEPCNT Depth contour 46
- LNDARE Land area 40
- LNDRGN Land region 36
- OBSTRN Obstruction 32
- LAKARE 25
- DYKCON 23
- M_QUAL Data quality 20
- DRGARE 16
- CBLOHD 14
- PIPARE 12
- CANALS 10
- PILPNT 10
- SOUNDG Sounding 10
- LNDMRK 9
- BRIDGE 8
- BUAARE 8
- SEAARE Sea area 8
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/US4TX1LH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4TX1LH/1.0/US4TX1LH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TX1LH/1.0/US4TX1LH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TX1LH/1.0/US4TX1LH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TX1LH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 13, 2025 | metadata.json |