Talk:Spectacle Reef Light

Coordinates are wrong
The coordinates I got from Roush are wrong. Even though I get "Spectacle Reef Light" in the listing when I click on things, plainly this is very seriously wrong as it should be surrounded directly by Lake Huron. Roush says the coordinates are: 45°77.329N 084°13.681W  Another sources gives it as Lat. 45º 46' 04" N -  Long.  84º 08' 02" W I'm going to try that one. I think the second one is correct. 7&amp;6=thirteen (talk) 02:22, 30 October 2008 (UTC) Stan

Characteristic of the light
The U.S. Coast Guard list of Michigan Lightts says: '''The light now flashes alternately white and red, every 60 seconds, the white light being 400,000 candlepower and the red light 80,000 candlepower, both second-order electric, and visible for 17 miles. There is also a 100 candlepower white winter light which flashes every 5 seconds. An air-diaphone fog signal is also located at the station.''' OTOH, Volume VII of USCG says something completely different, claims a range of 11 miles (which would be consistent with the 10.5 miles that Terry Pepper says is the range of a Tidelands signal (see Illumination at Terry Pepper) and does not mention the fog signal at all.  A real poser.  This is a quandary.  7&amp;6=thirteen (talk) 17:44, 30 October 2008 (UTC) Stan

Excellent discussion and source
This discusses this light as being part of the Lighthouse Board's development of technology (underwater cribs) to built in remote and dangerous places in lieu light vessels, etc. Clarke Historical Library. Places this in the context of a half dozen other lighthouses. Very well thought out. Take a look. 7&amp;6=thirteen (talk) 22:16, 1 November 2008 (UTC) Stan

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