NOAA S-57 chart cell
Rhode Island
US4RI1EA
- Usage band
- Approach · code 4
- Current edition
- 1.3
- Features
- 877
- S-57 layers
- 42
- Published
- May 18, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 41.70000° N
- South
- 41.40000° N
- West
- 71.70000° W
- East
- 71.40000° W
- Center
- 41.55000° N, 71.55000° W
- Bounds area
- 243 sq nm
- Feature density
- 3.612 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 20.9
- Smallest layer
- 1
- Largest layer
- 156
- Area sq km
- 833
- Features per sq km
- 1.05309
- SLCONS Shoreline construction 156
- COALNE Coastline 152
- DEPARE Depth area 71
- DEPCNT Depth contour 71
- UWTROC Underwater rock 64
- LNDRGN Land region 61
- LNDARE Land area 41
- OBSTRN Obstruction 28
- SLOTOP 25
- RIVERS River 24
- SBDARE Seabed area 22
- LAKARE 21
- M_QUAL Data quality 17
- BUAARE 16
- DMPGRD 12
- LNDMRK 11
- SEAARE Sea area 11
- BUISGL 9
- BOYLAT Lateral buoy 7
- BRIDGE 7
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/US4RI1EA.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.002
- S-57 update 003 https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.003
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/US4RI1EA.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4RI1EA/1.3/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.3 | May 18, 2026 | metadata.json |