Columbiad
This replica of a coast defence cannon known as the columbiad was manufactured, 1964, by Savannah Machine and Foundry Company as a public service. A similar cannon was positioned here during Union naval attacks, 1863. The columbiad fired 87-lb. shells; its range was 2,500 yds.
Georgia Historical Commission 1964
Plaque courtesy Lat34North.com.
Original page, with additional info, here.
Photo credit: Byron Hooks of Lat34North.com.