NOAA S-57 chart cell
Approaches to Saint Johns River and Saint Marys River
US4FL2QF
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 302
- S-57 layers
- 28
- Published
- Aug 11, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.60000° N
- South
- 30.30000° N
- West
- 81.30000° W
- East
- 81.00000° W
- Center
- 30.45000° N, 81.15000° W
- Bounds area
- 280 sq nm
- Feature density
- 1.0798 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.8
- Smallest layer
- 1
- Largest layer
- 64
- Area sq km
- 959
- Features per sq km
- 0.31481
- DEPCNT Depth contour 64
- DEPARE Depth area 59
- SBDARE Seabed area 39
- OBSTRN Obstruction 27
- SOUNDG Sounding 25
- M_QUAL Data quality 21
- WRECKS Wreck 19
- BOYLAT Lateral buoy 4
- CTNARE Caution area 4
- LIGHTS Light 4
- NEWOBJ 4
- SEAARE Sea area 4
- TWRTPT 4
- ACHARE Anchorage area 3
- MAGVAR Magnetic variation 3
- RESARE 3
- CBLSUB 2
- DMPGRD 2
- PILBOP 2
- CONZNE 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/US4FL2QF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4FL2QF/3.0/US4FL2QF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4FL2QF/3.0/US4FL2QF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4FL2QF/3.0/US4FL2QF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4FL2QF/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Aug 11, 2025 | metadata.json |