NOAA S-57 chart cell
Perdido Bay
US4FL1YA
- Usage band
- Approach · code 4
- Current edition
- 9.1
- Features
- 2,612
- S-57 layers
- 54
- Published
- May 19, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.60000° N
- South
- 30.30000° N
- West
- 87.60000° W
- East
- 87.30000° W
- Center
- 30.45000° N, 87.45000° W
- Bounds area
- 280 sq nm
- Feature density
- 9.339 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 48.4
- Smallest layer
- 1
- Largest layer
- 774
- Area sq km
- 959
- Features per sq km
- 2.72281
- SLCONS Shoreline construction 774
- COALNE Coastline 324
- DEPARE Depth area 188
- DEPCNT Depth contour 181
- LNDRGN Land region 166
- DAYMAR 105
- BCNLAT Lateral beacon 95
- RETRFL 79
- SBDARE Seabed area 70
- BUISGL 69
- LNDARE Land area 58
- LIGHTS Light 57
- OBSTRN Obstruction 47
- SEAARE Sea area 40
- PILPNT 38
- BCNSPP Special purpose beacon 37
- M_QUAL Data quality 37
- BOYLAT Lateral buoy 33
- SOUNDG Sounding 33
- RIVERS River 27
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/US4FL1YA.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4FL1YA/9.1/US4FL1YA.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4FL1YA/9.1/US4FL1YA.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4FL1YA/9.1/US4FL1YA.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4FL1YA/9.1/US4FL1YA.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4FL1YA/9.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 9.1 | May 19, 2026 | metadata.json |