NOAA S-57 chart cell
Santa Rosa Sound
US4FL1YC
- Usage band
- Approach · code 4
- Current edition
- 7.1
- Features
- 2,024
- S-57 layers
- 50
- Published
- Apr 9, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.60000° N
- South
- 30.30000° N
- West
- 87.00000° W
- East
- 86.70000° W
- Center
- 30.45000° N, 86.85000° W
- Bounds area
- 280 sq nm
- Feature density
- 7.2366 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 40.5
- Smallest layer
- 1
- Largest layer
- 681
- Area sq km
- 959
- Features per sq km
- 2.10986
- SLCONS Shoreline construction 681
- COALNE Coastline 213
- DEPARE Depth area 179
- DEPCNT Depth contour 175
- SBDARE Seabed area 98
- RETRFL 70
- LNDRGN Land region 65
- DAYMAR 51
- BCNLAT Lateral beacon 49
- PILPNT 44
- SLOGRD 39
- LNDARE Land area 37
- BOYLAT Lateral buoy 36
- OBSTRN Obstruction 35
- LIGHTS Light 34
- M_QUAL Data quality 30
- RIVERS River 30
- SEAARE Sea area 17
- LNDMRK 14
- RESARE 11
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/US4FL1YC.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4FL1YC/7.1/US4FL1YC.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4FL1YC/7.1/US4FL1YC.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4FL1YC/7.1/US4FL1YC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4FL1YC/7.1/US4FL1YC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4FL1YC/7.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 7.1 | Apr 9, 2026 | metadata.json |