US Navy 8-Inch Shell Gun of 63cwt in Vallejo, California

Many thanks to Rob of the YouTube channel Firearms Addict for sharing these photos!

US Navy 8-Inch Shell Gun of 63 Hundredweight Number 27 is displayed at the old gate to Mare Island Naval Shipyard in Vallejo, California. It was manufactured at West Point Foundry in 1841. It is marked as weighing 63-2-23 in hundredweight (7,135 pounds). It was designed to fire an approximately 50-pound explosive shell with an up to 9 pound propellant charge. Bureau of Ordnance records show that it was mounted aboard the razee frigate USS Independence in 1852. A second example of the type may be seen directly across Tennessee Avenue.