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*In 1936, the color changed from straight white to white with a red sector that faced land. This was accomplished through the use of a color shade inside the lens room.
*In 1936, the color changed from straight white to white with a red sector that faced land. This was accomplished through the use of a color shade inside the lens room.
*In 1978 this lens was dismantled. It is now on display at the DeTour Passage Historical Museum in De Tour Village, Michigan.<ref>[http://www.drlps.com/history/lighthouseHistory_5a.html History of the De Tour light, De Tour Light Preservation Society.]</ref>
*In 1978 this lens was dismantled. It is now on display at the DeTour Passage Historical Museum in De Tour Village, Michigan.<ref>[http://www.drlps.com/history/lighthouseHistory_5a.html History of the De Tour light, De Tour Light Preservation Society.]</ref>
*The present optic is an acrylic Vega VRB-25<<ref>[http://www.terrypepper.com/lights/closeups/illumination/acrylic/VRB-25/index.htm Vega VRB-25 description.]</ref> lens.<ref>[http://www.nps.gov/history/maritime/light/detour.htm National Park Service, Maritime heritage, inventory of De Tour Reef Light.]</ref>
*The present optic is an acrylic Vega VRB-25<ref>[http://www.terrypepper.com/lights/closeups/illumination/acrylic/VRB-25/index.htm Vega VRB-25 description.]</ref> lens.<ref>[http://www.nps.gov/history/maritime/light/detour.htm National Park Service, Maritime heritage, inventory of De Tour Reef Light.]</ref>
A concise explanation on the different lenses and their technology is available at [http://www.terrypepper.com/lights/closeups/illumination/index.htm Lighthouse Illumination Technology, Terry Pepper, Seeing the Light.]
A concise explanation on the different lenses and their technology is available at [http://www.terrypepper.com/lights/closeups/illumination/index.htm Lighthouse Illumination Technology, Terry Pepper, Seeing the Light.]


Revision as of 14:49, 18 May 2008

DeTour Reef Light
File:Detourreef.jpg
Map
LocationLake Huron, Michigan
Coordinates45°56′56.12″N 83°54′10.98″W / 45.9489222°N 83.9030500°W / 45.9489222; -83.9030500
Tower
FoundationCrib
ConstructionReinforced concrete and steel
Automated1974
HeightTower - 63 feet (19 m)
Focal plane - 74 feet (23 m)
ShapeSquare
MarkingsWhite with red roof
HeritageNational Register of Historic Places listed place, Michigan state historic site Edit this on Wikidata
RaconD Edit this on Wikidata
Light
First lit1931
Focal height23 m (75 ft) Edit this on Wikidata
Lens3.5 order Fresnel Lens
Range16 nmi (30 km; 18 mi) (white), 13 nmi (24 km; 15 mi) (red) Edit this on Wikidata
CharacteristicFl W 10s Edit this on Wikidata


The DeTour Reef Light is a non-profit-operated lighthouse marking the southern entrance of the DeTour Passage between the eastern end of Michigan's Upper Peninsula and Drummond Island. It marks the northern end of Lake Huron. The passage is used by almost all of the Great Lakes commercial freighter traffic moving to and from Lake Superior, with approximately 5,000 vessel movements annually. In addition, many recreational boaters use the passage. The nearest town is DeTour Village, Michigan.

Lighthouse history

The southern entrance to DeTour Passage is made dangerous by a shoal, DeTour Reef. In order to enter or leave the passage, boats must thread past a shallow area no more than 23 feet (7 m) deep.

In 1847 a lighthouse was located on shore at Point De Tour, Michigan to protect the DeTour Passage at the northwestern end of Lake Huron. In 1931 it was moved offshore on to De Tour Reef. It is locally called the "Gateway to Superior”.

The DeTour Reef Lighthouse, raised in 1931, not only marks the channel, but also is built atop DeTour Reef, and warns boats away from it. The lighthouse and its concrete base are 83 feet (25 m) tall.

This light (and its predecessor) have gone through many different lenses in its 160 year history.

  • In 1848, the original illuminating apparatus was a fixed white light produced by 13 Argand lamps each with a 14" reflector. It was designed with a 270-degree arc to conserve fuel oil.
  • In 1857 a 4th order Fresnel lens producing a fixed white light was installed.
  • In 1870 a fixed, white, 3rd order Fresnel lens was installed. That year, the remnants of the original stone tower were removed. In 1907, the 3rd order lens was replaced by a 3-1/2-order bi-valve lens. This lens did not last long.
  • In 1908 a 3 1/2 Order Fresnel lens, configured as a flashing white light with a characteristic of a one-second flash and a nine-second eclipse was installed. It had an effective range of 30 miles. The lens was manufactured by Barbier, Benard & Turenne Co. of Paris, France. It has the number USLHE 317 stamped on it.
  • In 1931, a new Detour Reef light structure was introduced. The same lens was relocated to it, The light remained white
  • In 1936, the color changed from straight white to white with a red sector that faced land. This was accomplished through the use of a color shade inside the lens room.
  • In 1978 this lens was dismantled. It is now on display at the DeTour Passage Historical Museum in De Tour Village, Michigan.[1]
  • The present optic is an acrylic Vega VRB-25[2] lens.[3]

A concise explanation on the different lenses and their technology is available at Lighthouse Illumination Technology, Terry Pepper, Seeing the Light.

Lighthouse privatization

Like most U.S. lighthouses, the DeTour Reef Lighthouse is no longer needed by its former owner, the United States Coast Guard. Beginning in 1998, they transferred ownership responsibilities for the light to the DeTour Reef Lighthouse Preservation Society (DRLPS), its current owner. The DRLPS renovated the light at a cost of $1.2 million.

As of 2006, the DRLPS offers boat trips to and tours of the lighthouse. A significant fee is charged to help cover the operating costs of maintaining the lighthouse.

The DeTour Reef Lighthouse was added to the National Register of Historic Places in 2005.[4]

Lighthouse relics

The DeTour Reef Light's former 3½-order Fresnel lens, taken out of service in 1978, is displayed at the DeTour Passage Historical Museum in DeTour, Mich., and the lighthouse's former diaphone foghorn is displayed at the Drummond Island Historical Museum.

References

  1. ^ History of the De Tour light, De Tour Light Preservation Society.
  2. ^ Vega VRB-25 description.
  3. ^ National Park Service, Maritime heritage, inventory of De Tour Reef Light.
  4. ^ http://www.nps.gov/history/nR/listings/20050325.htm

See also

Additional reading

  • Bibliography on Michigan lighthouses.
  • Crompton, Samuel Willard & Michael J. Rhein, The Ultimate Book of Lighthouses (2002) ISBN 1592231020; ISBN 978-1592231027.
  • Hyde, Charles K., and Ann and John Mahan. The Northern Lights: Lighthouses of the Upper Great Lakes. Detroit: Wayne State University Press, 1995. ISBN 0814325548 ISBN 9780814325544.
  • Jones, Ray & Bruce Roberts, American Lighthouses (Globe Pequot, September 1, 1998, 1st Ed.) ISBN 0762703245; ISBN 978-0762703241.
  • Jones, Ray,The Lighthouse Encyclopedia, The Definitive Reference (Globe Pequot, January 1, 2004, 1st ed.) ISBN 0762727357; ISBN 978-0762727353.
  • LaFave, Michael (Mackinac Center), Privatization Shines (article on the general subject of privatization of lighthouses, with a large section specifically on Granite Island.
  • Noble, Dennis, Lighthouses & Keepers: U. S. Lighthouse Service and Its Legacy (Annapolis: U. S. Naval Institute Press, 1997). ISBN 1557506388; ISBN 9781557506382.
  • Oleszewski, Wes, Great Lakes Lighthouses, American and Canadian: A Comprehensive Directory/Guide to Great Lakes Lighthouses, (Gwinn, Michigan: Avery Color Studios, Inc., 1998) ISBN 0-932212-98-0.
  • Penrod, John, Lighthouses of Michigan, (Berrien Center, Michigan: Penrod/Hiawatha, 1998) ISBN 9780942618785 ISBN 9781893624238.
  • Pepper, Terry. "Seeing the Light: Lighthouses on the western Great Lakes".
  • Putnam, George R., Lighthouses and Lightships of the United States, (Boston: Houghton Mifflin Co., 1933).
  • United States Coast Guard, Aids to Navigation, (Washington, DC: U. S. Government Printing Office, 1945).
  • United States Coast Guard, Aids to Navigation Historical Bibliography.
  • Wagner, John L. "Beacons Shining in the Night: The Lighthouses of Michigan". Clarke Historical Library, Central Michigan University.
  • Wagner, John L., Michigan Lighthouses: An Aerial Photographic Perspective, (East Lansing, Michigan: John L. Wagner, 1998) ISBN 1880311011 ISBN 9781880311011.
  • Wright, Larry and Wright, Patricia, Great Lakes Lighthouses Encyclopedia Hardback (Erin: Boston Mills Press, 2006) ISBN 1550463993.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=DeTour_Reef_Light&oldid=213252977"