The fort was equipped with eight large cannons during the Civil War, but at the end of the war three were transferred elsewhere.
The carriages have been rebuilt several times since then. While reminiscent of the style of carriage used during the Civil War, they lack the large side wheels that would have been used to move the upper section of the carriage forward prior to firing.
These cannons have been fired during historical reenactments during the 1970s and 1980s. Since 1996 they have been fired each year on the morning of July 4th. They are also fired at dusk during a historical encampment staged each September by the Fairhaven Village Militia.