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Chatham
State: MA
Year established: 1808
Latitude: 41 deg 40
min 18 sec N
Longitude: 69 deg 56
min 59 sec W
Height above sea level: 80 feet Original construction:
Two white 40-foot octagonal conical towers about 70 feet apart Rebuilds:
 1841: 48-foot brick towers undermined by erosion 1879-80
1877: 48-foot white brick-lined cast-iron conical towers 100-feet apart
1923: north light moved to Nauset Beach
Status:
Electrified 1939; automated 1982; active aid to navigation
Light characteristic:
Group-flashing white - twice every 10 seconds, visible for 24 nautical miles
More information:
http://lighthouse.cc/chatham/index.html
Holland Jr., F. Ross, Great American Lighthouses, National Historic Trust Guide, (Washington, DC: The Preservation Press, 1989), p. 102-103
Office of the Light House Board, List of Lights and Fog Signals on the Atlantic and Gulf Coasts of the United States, (Washington, DC: GPO, 1895), pp. 34-35
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