NOAA S-57 chart cell
Approaches to Saint Johns River and Saint Marys River
US4FL2QG
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 77
- S-57 layers
- 17
- Published
- Aug 11, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.60000° N
- South
- 30.30000° N
- West
- 81.00000° W
- East
- 80.70000° W
- Center
- 30.45000° N, 80.85000° W
- Bounds area
- 280 sq nm
- Feature density
- 0.2753 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 4.5
- Smallest layer
- 1
- Largest layer
- 31
- Area sq km
- 959
- Features per sq km
- 0.08027
- M_QUAL Data quality 31
- OBSTRN Obstruction 11
- SOUNDG Sounding 8
- SBDARE Seabed area 7
- TWRTPT 4
- CTNARE Caution area 3
- RESARE 3
- CBLSUB 1
- CONZNE 1
- DEPARE Depth area 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- SEAARE Sea area 1
- WRECKS Wreck 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/US4FL2QG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4FL2QG/2.0/US4FL2QG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4FL2QG/2.0/US4FL2QG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4FL2QG/2.0/US4FL2QG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4FL2QG/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Aug 11, 2025 | metadata.json |