Complex sentence: Naval tactics in the Age of Sail were used from the early 1600s when sailing ships replaced oared galleys to the 1860s when steam-powered ironclad warships rendered sailing line of battle ships obsolete.
Split into simpler sentences: Naval tactics in the Age of Sail were used from the early 1600s onward when sailing ships replaced oared galleys.Various naval tactics in the Age of Sail. These were used until the 1860s when steam-powered ironclad warships rendered sailing line of battle ships obsolete.