1860 - Smooth Bore Muzzle-Loading Gun 15-inch
American 15-inch Smooth Bore Muzzle-Loading Gun 1860
This gun, weighing 19,501 kg, was designed by John Dahlgren of the US Navy. The mark TP No51’ on the barrel stands for Tort Pitt Foundry No51 It was mounted on the monitor USS Catawaba, which...
Hong Kong Museum Of Coastal Defence