NOAA S-57 chart cell
Gulf of America
US4LA1GS
- Usage band
- Approach · code 4
- Current edition
- 2.1
- Features
- 123
- S-57 layers
- 25
- Published
- Oct 29, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.00000° N
- South
- 29.70000° N
- West
- 88.50000° W
- East
- 88.20000° W
- Center
- 29.85000° N, 88.35000° W
- Bounds area
- 281 sq nm
- Feature density
- 0.4371 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4.9
- Smallest layer
- 1
- Largest layer
- 46
- Area sq km
- 965
- Features per sq km
- 0.12744
- PIPSOL 46
- M_QUAL Data quality 14
- SBDARE Seabed area 13
- OBSTRN Obstruction 10
- SOUNDG Sounding 10
- DEPARE Depth area 3
- OFSPLF 3
- BOYSPP Special purpose buoy 2
- CBLSUB 2
- DEPCNT Depth contour 2
- LIGHTS Light 2
- M_NPUB 2
- WRECKS Wreck 2
- CONZNE 1
- CTNARE Caution area 1
- DMPGRD 1
- EXEZNE 1
- FAIRWY Fairway 1
- LNDARE Land area 1
- LNDMRK 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/US4LA1GS.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1GS/2.1/US4LA1GS.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1GS/2.1/US4LA1GS.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1GS/2.1/US4LA1GS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1GS/2.1/US4LA1GS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1GS/2.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.1 | Oct 29, 2025 | metadata.json |