NOAA S-57 chart cell
Gulf of America
US4LA1DN
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 542
- S-57 layers
- 32
- Published
- Dec 12, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.10000° N
- South
- 28.80000° N
- West
- 90.00000° W
- East
- 89.70000° W
- Center
- 28.95000° N, 89.85000° W
- Bounds area
- 284 sq nm
- Feature density
- 1.9091 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 16.9
- Smallest layer
- 1
- Largest layer
- 314
- Area sq km
- 974
- Features per sq km
- 0.55662
- PIPSOL 314
- SBDARE Seabed area 44
- OFSPLF 40
- DEPARE Depth area 23
- M_QUAL Data quality 23
- OBSTRN Obstruction 23
- DEPCNT Depth contour 18
- SOUNDG Sounding 16
- LIGHTS Light 6
- SWPARE 5
- BOYLAT Lateral buoy 3
- BOYSPP Special purpose buoy 3
- CBLSUB 2
- LNDARE Land area 2
- LNDMRK 2
- RESARE 2
- ACHARE Anchorage area 1
- BRIDGE 1
- CONZNE 1
- COSARE 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/US4LA1DN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1DN/2.0/US4LA1DN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1DN/2.0/US4LA1DN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1DN/2.0/US4LA1DN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1DN/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Dec 12, 2025 | metadata.json |