NOAA S-57 chart cell
Gulf of America to Breton Sound and Chandeleur Sound
US4LA1FP
- Usage band
- Approach · code 4
- Current edition
- 4.2
- Features
- 902
- S-57 layers
- 36
- Published
- Nov 12, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.70000° N
- South
- 29.40000° N
- West
- 89.40000° W
- East
- 89.10000° W
- Center
- 29.55000° N, 89.25000° W
- Bounds area
- 282 sq nm
- Feature density
- 3.1959 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 25.1
- Smallest layer
- 1
- Largest layer
- 268
- Area sq km
- 968
- Features per sq km
- 0.93178
- OFSPLF 268
- PIPSOL 95
- SBDARE Seabed area 88
- OBSTRN Obstruction 66
- BCNSPP Special purpose beacon 59
- DEPCNT Depth contour 52
- DEPARE Depth area 50
- WRECKS Wreck 44
- M_QUAL Data quality 30
- SOUNDG Sounding 23
- LNDARE Land area 14
- COALNE Coastline 13
- PILPNT 13
- LNDRGN Land region 9
- CTNARE Caution area 8
- DMPGRD 8
- LIGHTS Light 7
- SLCONS Shoreline construction 7
- BOYSPP Special purpose buoy 6
- DRGARE 6
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/US4LA1FP.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/US4LA1FP.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/US4LA1FP.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/US4LA1FP.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/US4LA1FP.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/US4LA1FP.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1FP/4.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 4.2 | Nov 12, 2025 | metadata.json |