 A significant number of broadside ironclads were built in the 1860s , principally in Britain and France , but in smaller numbers by other powers including Italy , Austria , Russia and the United States . The advantages of mounting guns on both broadsides was that the ship could engage more than one adversary at a time , and the rigging did not impede the field of fire . 
 A significant number of broadside ironclads <a href='uninflect' title='1'><mark>were</mark></a> built in the 1860s , principally in Britain and France , but in smaller numbers by other powers including Italy , Austria , Russia and the United States . The advantages of mounting guns on both broadsides was that the ship could engage more than one adversary at a time , and the rigging did not impede <a href='None' title='2'><mark>the</mark></a><a href='negative_concord' title='3'><mark>field</mark></a> of fire . 
A significant number of broadside ironclads was built in the 1860s , principally in Britain and France , but in smaller numbers by other powers including Italy , Austria , Russia and da United States . Tdaadvantages of mounting guns on both broadsides was that the ship could engage more than one adversary at a time , and the rigging did not impede no field of fire .