NOAA S-57 chart cell
Gulf of America
US4LA1FD
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 356
- S-57 layers
- 31
- Published
- Nov 26, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.70000° N
- South
- 29.40000° N
- West
- 93.00000° W
- East
- 92.70000° W
- Center
- 29.55000° N, 92.85000° W
- Bounds area
- 282 sq nm
- Feature density
- 1.2614 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.5
- Smallest layer
- 1
- Largest layer
- 106
- Area sq km
- 968
- Features per sq km
- 0.36775
- PIPSOL 106
- OFSPLF 39
- SBDARE Seabed area 31
- BCNSPP Special purpose beacon 25
- LIGHTS Light 25
- DAYMAR 23
- OBSTRN Obstruction 23
- COALNE Coastline 13
- WRECKS Wreck 11
- DEPARE Depth area 10
- DEPCNT Depth contour 9
- M_QUAL Data quality 9
- SOUNDG Sounding 8
- CBLSUB 3
- CTNARE Caution area 2
- RIVERS River 2
- SEAARE Sea area 2
- SLCONS Shoreline construction 2
- ADMARE 1
- CANALS 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/US4LA1FD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1FD/2.0/US4LA1FD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1FD/2.0/US4LA1FD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1FD/2.0/US4LA1FD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1FD/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Nov 26, 2025 | metadata.json |