NOAA S-57 chart cell
Approaches to Calcasieu Pass - Gulf of America
US4LA1EC
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 319
- S-57 layers
- 23
- Published
- Apr 11, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.40000° N
- South
- 29.10000° N
- West
- 93.30000° W
- East
- 93.00000° W
- Center
- 29.25000° N, 93.15000° W
- Bounds area
- 283 sq nm
- Feature density
- 1.1269 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.9
- Smallest layer
- 1
- Largest layer
- 163
- Area sq km
- 971
- Features per sq km
- 0.32856
- PIPSOL 163
- OFSPLF 36
- OBSTRN Obstruction 32
- SBDARE Seabed area 21
- M_QUAL Data quality 12
- SOUNDG Sounding 11
- DEPCNT Depth contour 10
- DEPARE Depth area 7
- LIGHTS Light 5
- BOYLAT Lateral buoy 4
- MAGVAR Magnetic variation 3
- WRECKS Wreck 3
- FAIRWY Fairway 2
- BOYSAW 1
- CBLSUB 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
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/US4LA1EC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1EC/1.0/US4LA1EC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1EC/1.0/US4LA1EC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1EC/1.0/US4LA1EC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1EC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 11, 2025 | metadata.json |