St. Martin Island Light

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St. Martin Island Light
St. Martin Island Light USCG Archive
St. Martin Island Light is located in Michigan
St. Martin Island Light
Location St. Martin Island Lake Michigan
Coordinates 45°30′10″N 86°45′27″W / 45.50278°N 86.75750°W / 45.50278; -86.75750Coordinates: 45°30′10″N 86°45′27″W / 45.50278°N 86.75750°W / 45.50278; -86.75750
Year first constructed 1905
Year first lit 1905
Foundation Granite[1]
Construction Steel exoskeleton[1]
Markings / pattern white with black lantern[1]
Height 75 ft (23 m)[2]
Focal height 81 feet (25 m)[3]
Original lens occulting 4th Order Fresnel illuminated by a 24,000 candlepower incandescent oil vapor lamp. Rotating red and white flash panels.[4]
Current lens 7.5-inch (190 mm) Tideland Signal acrylic lens[5]
Range 18 nautical miles (33 km; 21 mi)[6]
Characteristic Al W R 10s: W fl 5s ec.; R fl 5s ec. Light visible from 135° to 355°, dark sector covering island.[6]
ARLHS number USA-802[7][8]
USCG number


St. Martin Island Light Station
Nearest city Fairport, Michigan
Area 2 acres (0.81 ha)
MPS U.S. Coast Guard Lighthouses and Light Stations on the Great Lakes TR
NRHP reference # 84001387[9]
Added to NRHP July 19, 1984
Heritage place listed on the National Register of Historic Places Edit this on Wikidata

St. Martin Island Light is an exoskeleton lighthouse that marks one of four passages between Lake Michigan and the bay of Green Bay.[10] Constructed in 1905, this light tower is the only example in the US of a pure exoskeletal tower on the Great Lakes. Similar designs exist in Canada.[11] Painted white, the hexagonal tower is made of iron plates which are supported by six exterior steel posts that have latticed buttresses.[4][12]

The cream city brick lightkeeper's house was modeled after that used for the Plum Island Range Lights.[4]

It was listed on the National Register of Historic Places on July 19, 1984, Reference #84001387 as St. Martin Light Station (U.S. Coast Guard/ Great Lakes TR). It is not on the state list/inventory.[13] A steam fog signal was also installed.[14] which was thereafter replaced by a diaphone.[4]

The lighthouse keeper's dwelling has been abandoned and "is in poor condition."[12]

The light station is closed to the public. It is managed by in partnership with the Little Traverse Bay Band of the Odawa Indian Nation.[11][15]


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