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ROUND ISLAND PASSAGE LIGHT

State: MICHIGAN
Location: STRAITS OF MACKINAC / LAKE HURON
Nearest City: MACKINAC ISLAND
County: MACKINAC
U.S.C.G. District: 9
Year Station Established: 1948


Round Island Passage Light
NPS photo by Ralph Eshelman
Existing Historic Tower:
  • Year Light First Lit: 1948
  • Is the Light Operational? YES
  • Date Deactivated: N/A
  • Automated: 1973
  • Foundation Materials: CRIB
  • Construction Materials: REINFORCED CONCRETE
  • Markings/Patterns: WHITE TOWER ON RED HOUSE ON WHITE BASE
  • Shape: SKELETAL
  • Relationship to Other Structures: INTEGRAL
  • Tower Height: 60
  • Original Optic: SEALED BEAM
  • Year Original Lens Installed:
  • Present Optic: 190 MM
  • Year Present Lens Installed:
  • Height of Focal Plane: 71
  • Fresnel Lens Disposition:
  • Has tower been moved? NO
Previous Tower(s): N/A

Modern Tower? NO

Existing Sound Signal Building? NO
  • Fog Signal Type: HORN
Existing Keepers Quarters? UNKNOWN
  • Year Constructed: 1948
  • Number of Stories:
  • Architectural Style:
  • Construction Materials:
Other Structures: RADIOBEACON

Current Use: ACTIVE AID TO NAVIGATION

Owner/Manager: U.S. COAST GUARD

Open to the Public? NO

Web Site:

National Register Status: NONE; Reference # 0
Name of Listing: DETERMINED ELIGIBLE BY SHPO
On State List/Inventory? NO; Year Listed:

Miscellaneous:



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Last Modified: Tue, Apr 30 2002 1:35:02 pm EDT
JMP



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