NOAA S-57 chart cell
Gulf Intracoastal Waterway - East Matagorda Bay and Gulf of America
US4TX1KH
- Usage band
- Approach · code 4
- Current edition
- 1.2
- Features
- 470
- S-57 layers
- 40
- Published
- Jun 8, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 28.80000° N
- South
- 28.50000° N
- West
- 95.70000° W
- East
- 95.40000° W
- Center
- 28.65000° N, 95.55000° W
- Bounds area
- 285 sq nm
- Feature density
- 1.6508 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.8
- Smallest layer
- 1
- Largest layer
- 61
- Area sq km
- 977
- Features per sq km
- 0.48129
- COALNE Coastline 61
- SBDARE Seabed area 57
- DEPARE Depth area 40
- DEPCNT Depth contour 39
- PIPSOL 38
- SLCONS Shoreline construction 34
- OBSTRN Obstruction 26
- RIVERS River 25
- OFSPLF 21
- LNDRGN Land region 20
- LNDARE Land area 16
- SOUNDG Sounding 16
- M_QUAL Data quality 13
- DYKCON 11
- CANALS 10
- SEAARE Sea area 5
- PILPNT 4
- BRIDGE 3
- CTNARE Caution area 3
- MAGVAR Magnetic variation 3
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/US4TX1KH.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/US4TX1KH.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/US4TX1KH.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/US4TX1KH.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/US4TX1KH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/US4TX1KH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TX1KH/1.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.2 | Jun 8, 2026 | metadata.json |