NOAA S-57 chart cell
Gulf of America
US4LA1CN
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 227
- S-57 layers
- 20
- Published
- May 30, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 28.80000° N
- South
- 28.50000° N
- West
- 90.00000° W
- East
- 89.70000° W
- Center
- 28.65000° N, 89.85000° W
- Bounds area
- 285 sq nm
- Feature density
- 0.7973 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.4
- Smallest layer
- 1
- Largest layer
- 72
- Area sq km
- 977
- Features per sq km
- 0.23245
- PIPSOL 72
- DEPARE Depth area 28
- DEPCNT Depth contour 28
- M_QUAL Data quality 26
- SWPARE 22
- OBSTRN Obstruction 11
- OFSPLF 11
- SBDARE Seabed area 6
- WRECKS Wreck 4
- SEAARE Sea area 3
- BOYSPP Special purpose buoy 2
- CONZNE 2
- FAIRWY Fairway 2
- LIGHTS Light 2
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4LA1CN.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1CN/1.1/US4LA1CN.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1CN/1.1/US4LA1CN.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1CN/1.1/US4LA1CN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1CN/1.1/US4LA1CN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1CN/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 30, 2025 | metadata.json |