The great gun, which has been for some months in course of construction for the navy by Mr. JOHN ERICSSON ... The English 68-pounder, (of 12,500 pounds,) said by H.R.H. the Duke of Cambridge ...

manufactured at the naval depot of Turvia, in Spain. Fifteen of these guns are on the spar, and twenty-fire on the gun deck. Forward, on the former, is a neat brass 12-pounder howitzer ...

British soldiers used the gun throughout the Revolutionary War ... a Revolutionary War 24-pound howitzer and a Coehorn 12-pounder British mortar.