Complex sentence: It was the first major sea battle between ironclads and one of the last to involve deliberate ramming, the Italian navy fired roughly 1450 shots during the engagement, however they failed to do any serious damage to an Austrian ship.
Split into simpler sentences: It was the first major sea battle between ironclads and one of the last to involve deliberate ramming. The Italian navy fired roughly 1450 shots during the engagement, but failed to do any serious damage to an Austrian ship.