Chatham Light

Chatham Light
Chatham Light and Coast Guard Station (2007)
LocationChatham, Massachusetts
Coordinates41°40′16.704″N 69°57′.554″W / 41.67130667°N 69.95015389°W / 41.67130667; -69.95015389
Tower
Constructed1808
FoundationConcrete
ConstructionCast iron plate with brick lining
Automated1982
Height14.5 m (48 ft) 
ShapeConical
MarkingsWhite with gray lantern
HeritageNational Register of Historic Places listed place 
Fog signalnone
Light
First lit1877 (current structure)
Focal height80 feet (24 m)
Lens4th order Fresnel lens (original), Carlisle & Finch DCB-224 (current)
Range24 nautical miles (44 km; 28 mi)
CharacteristicFl (2) W 10s, lighted continuously
Chatham Light Station
LocationMain St., Chatham, Massachusetts
Area2 acres (0.81 ha)
Built1877
Part ofOld Village Historic District (ID01001406)
MPSLighthouses of Massachusetts TR
NRHP reference No.87001501
Significant dates
Added to NRHPJune 15, 1987
Designated CPDecember 17, 2001

Chatham Lighthouse, known as Twin Lights prior to 1923, is a lighthouse in Chatham, Massachusetts, near the "elbow" of Cape Cod. The original station, close to the shore, was built in 1808 with two wooden towers, which were both replaced in 1841. In 1877, two new towers, made of cast iron rings, replaced those. One of the towers was moved to the Eastham area, where it became known as Nauset Light in 1923.