NOAA S-57 chart cell
Gulf Intracoastal Waterway - Calcasieu River and Calcasieu Lake
US4LA1HC
- Usage band
- Approach · code 4
- Current edition
- 1.3
- Features
- 1,515
- S-57 layers
- 50
- Published
- Mar 25, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.30000° N
- South
- 30.00000° N
- West
- 93.30000° W
- East
- 93.00000° W
- Center
- 30.15000° N, 93.15000° W
- Bounds area
- 281 sq nm
- Feature density
- 5.4002 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 30.3
- Smallest layer
- 1
- Largest layer
- 197
- Area sq km
- 962
- Features per sq km
- 1.57444
- COALNE Coastline 197
- DEPARE Depth area 173
- SLCONS Shoreline construction 172
- DEPCNT Depth contour 122
- BCNLAT Lateral beacon 96
- LNDRGN Land region 70
- DAYMAR 67
- RIVERS River 64
- LIGHTS Light 63
- PILPNT 61
- OBSTRN Obstruction 60
- M_QUAL Data quality 34
- SILTNK 32
- LNDARE Land area 27
- MORFAC 27
- BRIDGE 25
- SEAARE Sea area 24
- CTNARE Caution area 16
- OFSPLF 16
- PIPARE 15
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/US4LA1HC.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.002
- S-57 update 003 https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.003
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/US4LA1HC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1HC/1.3/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.3 | Mar 25, 2026 | metadata.json |