NOAA S-57 chart cell
Gulf of America to Barataria Bay, Lake Grande Ecaille, and Lake Washington
US4LA1EN
- Usage band
- Approach · code 4
- Current edition
- 2.2
- Features
- 2,091
- S-57 layers
- 48
- Published
- Sep 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.40000° N
- South
- 29.10000° N
- West
- 90.00000° W
- East
- 89.70000° W
- Center
- 29.25000° N, 89.85000° W
- Bounds area
- 283 sq nm
- Feature density
- 7.3869 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 43.6
- Smallest layer
- 1
- Largest layer
- 303
- Area sq km
- 971
- Features per sq km
- 2.15366
- LNDARE Land area 303
- COALNE Coastline 245
- LNDRGN Land region 201
- PILPNT 193
- PIPSOL 169
- OBSTRN Obstruction 155
- OFSPLF 106
- SBDARE Seabed area 105
- SLCONS Shoreline construction 75
- LIGHTS Light 68
- DAYMAR 61
- DEPARE Depth area 48
- SEAARE Sea area 45
- BCNLAT Lateral beacon 42
- BCNSPP Special purpose beacon 42
- DEPCNT Depth contour 40
- M_QUAL Data quality 24
- MARCUL 24
- BOYLAT Lateral buoy 23
- WRECKS Wreck 20
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/US4LA1EN.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/US4LA1EN.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/US4LA1EN.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/US4LA1EN.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/US4LA1EN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/US4LA1EN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1EN/2.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.2 | Sep 29, 2025 | metadata.json |