Fort Duvall

Fort Duvall is a military fortification located on an island off the coast of Hull that served as part of Boston Harbor's defense system. The installation featured bunkers and gun emplacements designed to protect against maritime attacks.

The United States acquired the island in 1917 and began construction during the 1920s as part of a broader coastal defense system. The fortification operated as a key defensive position for the region during and after World War II.

This military installation received its name in honor of Major General William Penn Duvall, who demonstrated exceptional service in the Philippines.

The island is reachable on foot from land via a narrow connection, especially at lower water levels. Visitors should watch for uneven ground and possible tidal flooding in certain areas.

The fort housed two heavy-caliber guns that were uncommon in regional military installations of that era. These weapons were designed to monitor and intercept ships at considerable distances from the shore.

Location: Massachusetts

Inception: 1920

GPS coordinates: 42.30010,-70.89590

Latest update: December 12, 2025 14:26