NOAA S-57 chart cell

Rhode Island

US4RI1DB

Usage band
Approach · code 4
Current edition
1.30
Features
463
S-57 layers
38
Published
May 18, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
41.40000° N
South
41.10000° N
West
71.40000° W
East
71.10000° W
Center
41.25000° N, 71.25000° W
Bounds area
244 sq nm
Feature density
1.8981 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
12.2
Smallest layer
1
Largest layer
87
Area sq km
837
Features per sq km
0.5534
  1. SBDARE Seabed area 87
  2. DEPCNT Depth contour 70
  3. DEPARE Depth area 67
  4. LIGHTS Light 33
  5. LNDARE Land area 31
  6. LNDMRK 31
  7. UWTROC Underwater rock 24
  8. M_QUAL Data quality 22
  9. CBLSUB 20
  10. WRECKS Wreck 14
  11. SOUNDG Sounding 12
  12. DMPGRD 7
  13. RESARE 5
  14. FOGSIG 3
  15. MAGVAR Magnetic variation 3
  16. RECTRC 3
  17. SEAARE Sea area 3
  18. TSSLPT 3
  19. CTNARE Caution area 2
  20. PRCARE 2

Nearby Chart Cells

Approach usage band

  1. New York US4NY1CY - about 14 nm away
  2. Southern Massachusetts US4MA1DC - about 14 nm away
  3. Rhode Island US4RI1CB - about 18 nm away
  4. Rhode Island US4RI1EB - about 18 nm away
  5. Rhode Island US4RI1EA - about 23 nm away
  6. Southern Massachusetts US4MA1EC - about 23 nm away

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.

Editions

Edition Published Metadata
1.30 May 18, 2026 metadata.json