http://stephanepereira.com/wp-includes/blocks/post-featured-image/  

The Confederate ironclad Tennessee was effectively armed with a concentrated and powerful armament of two 7-inch Brooke double-banded rifles fore and aft on pivot mounts and four 6.4-inch Brooke double-banded rifles, two per broadside.

http://city-made.com/img_1069/

The 7-inch rifles, weighing 15,300 pounds each, were manufactured in Selma, Alabama. This, the bow gun, tube no. S-10, is property of the Naval History and Heritage Command (NHHC) and located at the Washington Navy Yard in Washington, DC. Its companion tube, no. S-5 at the stern pivot, is also the property of NHHC, is on loan and on display outside the Selma City Hall. In the background, the three visible guns are from Tennessee’s four-gun broadside battery.

This gun is one of the four 9,000 pound 6.4-inch broadside rifles, three of which are also at NHHC in Washington. It was forged at the Tredegar Ironworks in Richmond, Virginia.

This illustration shows the guns mounts. The pivot guns were mounted on large sliding carriages and the broadside guns on two-wheel Marsilly carriages.