NOAA S-57 chart cell
Gulf of America to East Bay to Southwest Pass and South Pass
US4LA1DP
- Usage band
- Approach · code 4
- Current edition
- 3.2
- Features
- 5,527
- S-57 layers
- 43
- Published
- Apr 20, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.10000° N
- South
- 28.80000° N
- West
- 89.40000° W
- East
- 89.10000° W
- Center
- 28.95000° N, 89.25000° W
- Bounds area
- 284 sq nm
- Feature density
- 19.4684 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 128.5
- Smallest layer
- 1
- Largest layer
- 2,348
- Area sq km
- 974
- Features per sq km
- 5.67606
- PIPSOL 2,348
- LNDARE Land area 555
- OFSPLF 463
- COALNE Coastline 434
- SLCONS Shoreline construction 314
- LNDRGN Land region 220
- RIVERS River 213
- DEPCNT Depth contour 162
- DEPARE Depth area 161
- LAKARE 87
- M_QUAL Data quality 73
- OBSTRN Obstruction 73
- PILPNT 58
- SEAARE Sea area 44
- SBDARE Seabed area 43
- SOUNDG Sounding 42
- LIGHTS Light 38
- BCNLAT Lateral beacon 26
- DAYMAR 23
- DMPGRD 23
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/US4LA1DP.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/US4LA1DP.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/US4LA1DP.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/US4LA1DP.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/US4LA1DP.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/US4LA1DP.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1DP/3.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.2 | Apr 20, 2026 | metadata.json |