Name and Location

The Chatham Light, also known as the Twin Lights, is a lighthouse located at 37 Main Street, Chatham, MA 02633, United States. Its coordinates are 41.6714041 N, 69.9498826 W.

2. Construction and History

The Chatham Light was first established under the name "Twin Lights", with an original construction date unknown. Subsequent rebuilds or relocations have not been documented. While it has no federal or state historic designation recorded, its heritage status can be explored further through the U.S. Coast Guard Historian's Office or the Massachusetts Historical Commission.

3. Architecture and Materials

The tower height is 24.4 meters above base (80 ft), but details on construction material are not available. The surrounding architecture features a Coast Guard housing compound, support buildings, and an urban Main Street setting that overlooks Chatham harbor approach via Stage Harbor or Chatham Inner Harbor.

4. Light and Navigation

The lighthouse's light characteristic, nominal range, and lens type are not available. It is assumed to have a power source of electricity, with details not published. The Chatham Light continues to serve as an active navigational aid for vessels approaching Chatham waterways.

5. Accessibility and Visiting

Due to its location within a Coast Guard facility, public entry is restricted, and there are no general tours advertised. Best external views can be obtained from the public sidewalk on Main Street or nearby harbor vistas.

6. Notable Views and Landscape

The lighthouse overlooks Chatham harbor approach via Stage Harbor or Chatham Inner Harbor, offering picturesque views of the surrounding area.

7. Anecdotes and Folklore

Locally remembered as the "Twin Lights" signal for inbound fishing boats in the 19th century, this folklore requires archival validation to confirm its accuracy.

8. Technical and Operational Details

The lighthouse is operated by the United States Coast Guard and managed by the U.S. Coast Guard – First District. It has been automated since no on-site civilian keeper is present. Radar or AIS installations are not publicly recorded.

9. Further Information

For further reading, please refer to the MassGIS Lighthouses database (http://mass.gov/mgis/lighthouses.htm), Wikidata entry Q5087672, Wikipedia (https://en.wikipedia.org/wiki/Chatham_Light), and NOAA Chart 13267 "Nantucket to Monomoy Island".