NOAA S-57 chart cell
Rhode Island
US4RI1FB
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,796
- S-57 layers
- 32
- Published
- Dec 13, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 42.00000° N
- South
- 41.70000° N
- West
- 71.40000° W
- East
- 71.10000° W
- Center
- 41.85000° N, 71.25000° W
- Bounds area
- 242 sq nm
- Feature density
- 7.4316 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 56.1
- Smallest layer
- 1
- Largest layer
- 517
- Area sq km
- 829
- Features per sq km
- 2.1667
- SLCONS Shoreline construction 517
- COALNE Coastline 434
- BUISGL 237
- LNDRGN Land region 167
- RIVERS River 70
- SILTNK 62
- BRIDGE 59
- BUAARE 52
- LNDARE Land area 43
- SEAARE Sea area 38
- LAKARE 36
- LNDMRK 27
- PYLONS 12
- HRBFAC 5
- DAMCON 4
- RESARE 4
- CTNARE Caution area 3
- DEPARE Depth area 3
- HULKES 3
- M_QUAL Data quality 3
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/US4RI1FB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4RI1FB/1.0/US4RI1FB.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4RI1FB/1.0/US4RI1FB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4RI1FB/1.0/US4RI1FB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4RI1FB/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 13, 2024 | metadata.json |