NOAA S-57 chart cell
Gulf of America to Southwest Pass, Vermilion Bay, and West Cote Blanche Bay
US4LA1FG
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 1,069
- S-57 layers
- 35
- Published
- Mar 26, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.70000° N
- South
- 29.40000° N
- West
- 92.10000° W
- East
- 91.80000° W
- Center
- 29.55000° N, 91.95000° W
- Bounds area
- 282 sq nm
- Feature density
- 3.7876 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 30.5
- Smallest layer
- 1
- Largest layer
- 257
- Area sq km
- 968
- Features per sq km
- 1.10429
- OFSPLF 257
- PIPSOL 202
- DEPARE Depth area 87
- DEPCNT Depth contour 78
- COALNE Coastline 61
- SBDARE Seabed area 61
- LIGHTS Light 33
- DAYMAR 32
- BCNLAT Lateral beacon 30
- LNDARE Land area 26
- SEAARE Sea area 25
- LNDRGN Land region 24
- M_QUAL Data quality 23
- OBSTRN Obstruction 23
- PILPNT 20
- WRECKS Wreck 20
- SOUNDG Sounding 13
- BCNSPP Special purpose beacon 10
- SLCONS Shoreline construction 9
- MORFAC 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/US4LA1FG.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1FG/1.1/US4LA1FG.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1FG/1.1/US4LA1FG.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1FG/1.1/US4LA1FG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1FG/1.1/US4LA1FG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1FG/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Mar 26, 2025 | metadata.json |