NOAA S-57 chart cell
Gulf of America
US4FL1UM
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 48
- S-57 layers
- 15
- Published
- Feb 11, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 29.40000° N
- South
- 29.10000° N
- West
- 84.00000° W
- East
- 83.70000° W
- Center
- 29.25000° N, 83.85000° W
- Bounds area
- 283 sq nm
- Feature density
- 0.1696 / sq nm
Chart Statistics
15 largest layers shown
- Average features per layer
- 3.2
- Smallest layer
- 1
- Largest layer
- 13
- Area sq km
- 971
- Features per sq km
- 0.04944
- DEPARE Depth area 13
- DEPCNT Depth contour 13
- SBDARE Seabed area 5
- SOUNDG Sounding 3
- M_NPUB 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- CONZNE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- MIPARE 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/US4FL1UM.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4FL1UM/3.0/US4FL1UM.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4FL1UM/3.0/US4FL1UM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4FL1UM/3.0/US4FL1UM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4FL1UM/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Feb 11, 2026 | metadata.json |