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Lighthouse Inspection Reports Database

DESCRIPTION OF LIGHT STATION

Rock Of Ages Light Station

 

Michigan

 

9th

 

Ralph R. Tinkham

 

2-3/8 miles, 270 degrees true from W'ly point of Washington Island, off SW'ly end of Isle Royal, Michigan, Northern Lake Superior.

 

04/03/1912

 

Double white flash every 10 seconds, Thus; Flash, 0.3 sec, Eclipse 2.2 sec., Flash 0.3 sec., Eclipse 7.2 sec. Total of 10 seconds.

 

47°51' 59.74"

 

89°18' 52.46"