NOAA S-57 chart cell
Rhode Island
US4RI1EB
- Usage band
- Approach · code 4
- Current edition
- 1.2
- Features
- 2,680
- S-57 layers
- 54
- Published
- May 18, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 41.70000° N
- South
- 41.40000° N
- West
- 71.40000° W
- East
- 71.10000° W
- Center
- 41.55000° N, 71.25000° W
- Bounds area
- 243 sq nm
- Feature density
- 11.0378 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 49.6
- Smallest layer
- 1
- Largest layer
- 424
- Area sq km
- 833
- Features per sq km
- 3.21811
- SLCONS Shoreline construction 424
- UWTROC Underwater rock 383
- COALNE Coastline 374
- DEPCNT Depth contour 284
- DEPARE Depth area 260
- LNDRGN Land region 141
- OBSTRN Obstruction 129
- LNDARE Land area 121
- SBDARE Seabed area 105
- RIVERS River 54
- LAKARE 39
- M_QUAL Data quality 38
- SLOTOP 36
- LNDMRK 34
- SEAARE Sea area 27
- BOYLAT Lateral buoy 24
- BUISGL 22
- BUAARE 19
- BRIDGE 14
- CTNARE Caution area 13
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/US4RI1EB.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/US4RI1EB.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/US4RI1EB.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/US4RI1EB.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/US4RI1EB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/US4RI1EB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4RI1EB/1.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.2 | May 18, 2026 | metadata.json |