NOAA S-57 chart cell

Broad Sound and Nantasket Roads

US5BOSCE

Usage band
Harbor · code 5
Current edition
4.3
Features
1,724
S-57 layers
48
Published
Jun 11, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

Loading map
North
42.37500° N
South
42.30000° N
West
70.95000° W
East
70.87500° W
Center
42.33750° N, 70.91250° W
Bounds area
15 sq nm
Feature density
115.0189 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
35.9
Smallest layer
1
Largest layer
563
Area sq km
51
Features per sq km
33.53415
  1. UWTROC Underwater rock 563
  2. DEPCNT Depth contour 195
  3. LNDARE Land area 174
  4. DEPARE Depth area 167
  5. SLCONS Shoreline construction 105
  6. SBDARE Seabed area 83
  7. BOYLAT Lateral buoy 55
  8. OBSTRN Obstruction 52
  9. COALNE Coastline 46
  10. LIGHTS Light 43
  11. SEAARE Sea area 38
  12. DRGARE 35
  13. SOUNDG Sounding 23
  14. WRECKS Wreck 17
  15. M_QUAL Data quality 15
  16. BOYSPP Special purpose buoy 9
  17. BUISGL 9
  18. FOGSIG 9
  19. LNDMRK 7
  20. PILPNT 7

Nearby Chart Cells

Harbor usage band

  1. Massachusetts Bay US5BOSCF - about 3 nm away
  2. President Roads to Boston Inner Harbor US5BOSCD - about 3 nm away
  3. Weymouth Fore River, Hingham Bay, and Hull Bay US5BOSBE - about 5 nm away
  4. Nahant Harbor - Nahant Bay to Broad Sound US5BOSDE - about 5 nm away
  5. Massachusetts Bay US5BOSDF - about 6 nm away
  6. Chelsea River and Winthrop Beach to Lynn Harbor-Saugus River US5BOSDD - about 6 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
4.3 Jun 11, 2025 metadata.json