Cape Ann Light (Twin Lights)

The Cape Ann Light (Twin Lights) is situated on Thachers Island, located off the coast of Rockport, Massachusetts, United States.

Location

• The lighthouse can be accessed via Wedmore Walk.

History

Construction of the Cape Ann Light began in 1891 and was completed in 1893. It was designed to serve as a navigational aid for mariners approaching the busy shipping channel between Boston and Halifax, Nova Scotia.

The lighthouse has been an important part of the region's maritime history, guiding vessels safely into Rockport Harbor.

Architecture

The Cape Ann Light is a two-tower lighthouse, consisting of a 37.8-meter (125-foot) tall main tower and a 25.3-meter (83-foot) tall south tower.

The structure is built from granite and features a distinctive red-painted finish.

The light's architectural style is characteristic of late 19th-century American lighthouses.

Light Characteristics

The Cape Ann Light emits a red flash, visible from a range of 17 nautical miles.

The light's period is 5 seconds, with a fog signal consisting of a horn blast every 60 seconds.

Current Status

The Cape Ann Light remains an active aid to navigation, operated by the U.S. Coast Guard.

However, it has been automated since its original construction, and no longer requires manual maintenance or occupation.

Heritage Status

The Cape Ann Light was listed on the National Register of Historic Places in 1971, recognizing its significance as a historic lighthouse.

It is also protected under local heritage laws by the City of Rockport, Massachusetts.

Notable Historical Events

The Cape Ann Light played an important role during World War II, serving as a navigational aid for Allied ships entering and leaving Boston Harbor.

The lighthouse's distinctive red color was also used to signal friendly vessels to avoid potential hazards in the busy shipping channel.