Chatham Lighthouse – Chatham’s Twin Light

Chatham Lighthouse at Night, Jim Caldwell Redondo Beach, Chatham Harbor, Cape Code, Fresnel lens, Eatham, Nauset lightouse

Just under 90 miles from Boston, on southeast corner of Cape Cod, lies Chatham Harbor and the Chatham Lighthouse.  The original lighthouse was built in 1808.  In 1887, after erosion created stability issues, the lighthouse was rebuilt, this time set further back.  While the tower height reaches 48 feet, the light’s focal plane projects at approximately 80 feet above the ocean.

Chatham Lighthouse at Night, Jim Caldwell Redondo Beach, Chatham Harbor, Cape Code, Fresnel lens, Eatham, Nauset lightouse

From its beginning to 1923, Chatham’s familiar beacons were famous to sailors for its Twin Lights.  The original lighting configuration was two fixed lights.  In 1857, the lights were upgraded to Fresnel lenses.  This configuration was upgraded in 1923 with a clock mechanism to rotate a single lens.  The second lens was moved to the Nauset Lighthouse in Eastam.  In 1969, the U. S. Coast Guard upgraded the room and lantern, capable of projecting a much stronger beam.  The old lens and room were donated to Chatham Historical Society.  In 1982, the Coast Guard completely automated the lighthouse.

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Jim Caldwell
Redondo Beach

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About jw60sea

Jim Caldwell has over 26 years of experience in the public safety sector in occupations ranging from professional ski patrol, and ocean lifeguard to firefighter. Jim has worked for the Redondo Beach Fire Department for the last 22 years holding successively higher positions of responsibility. For the last six years, Jim has held the rank of Engineer with responsibility for driving and operating the Department’s Engines and Tillered Aerial Ladder Truck. Throughout his career, he has shown a dedication not only to public safety but also community service.
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