Line of battle in the context of "French Navy"

The Battle of Lepanto was a naval engagement that took place on 7 October 1571 when a fleet of the Holy League, a coalition of Catholic states arranged by Pope Pius V and led by the navies of the Republic of Venice and the Spanish Empire, inflicted a major defeat on the fleet of the Ottoman Empire in the Gulf of Patras. The Ottoman forces were sailing westward from their naval station in Lepanto (the Venetian name of ancient Naupactus – Greek Ναύπακτος, Turkish İnebahtı) when they met the fleet of the Holy League which was sailing east from Messina, Sicily.

Lepanto marks the last major engagement in the Western world to be fought almost entirely between rowing vessels, namely the galleys and galleasses, which were the direct descendants of ancient trireme warships. The battle was in essence an "infantry battle on floating platforms". It was the largest naval battle in Western history since classical antiquity, involving more than 450 warships. Over the following decades, the increasing importance of the galleon and the line of battle tactic would displace the galley as the major warship of its era, marking the beginning of the "Age of Sail".

A ship of the line was a type of naval warship constructed during the Age of Sail from the 17th century to the mid-19th century. The ship of the line was designed for the naval tactic known as the line of battle, which involved the two columns of opposing warships manoeuvering to volley fire with the cannons along their broadsides. In conflicts where opposing ships were both able to fire from their broadsides, the faction with more cannons firing – and therefore more firepower – typically had an advantage.

From the end of the 1840s, the introduction of steam power brought less dependence on the wind in battle and led to the construction of screw-driven wooden-hulled ships of the line; a number of purely sail-powered ships were converted to this propulsion mechanism. However, the rise of the ironclad frigate, starting in 1859, made steam-assisted ships of the line obsolete. The ironclad warship was predecessor to the 20th-century battleship, whose very designation is itself a contraction of the phrase "ship of the line of battle" or, more colloquially, "battleship of the line".

The II Battle Squadron was a unit of the German High Seas Fleet before and during World War I. The squadron saw action throughout the war, including the Battle of Jutland on 31 May – 1 June 1916, where it formed the rear of the German line.

The Mediterranean campaign of 1798 was a series of major naval operations surrounding a French expeditionary force sent to Egypt under Napoleon Bonaparte during the French Revolutionary Wars. The French Republic sought to capture Egypt as the first stage in an effort to threaten British India and support Tipu Sultan, and thus force Great Britain to make peace. Departing Toulon in May 1798 with over 40,000 troops and hundreds of ships, Bonaparte's fleet sailed southeastwards across the Mediterranean Sea. They were followed by a small British squadron under Rear-Admiral Sir Horatio Nelson, later reinforced to 13 ships of the line, whose pursuit was hampered by a lack of scouting frigates and reliable information. Bonaparte's first target was the island of Malta, which was under the government of the Knights of St. John and theoretically granted its owner control of the Central Mediterranean. Bonaparte's forces landed on the island and rapidly overwhelmed the defenders, securing the port city of Valletta before continuing to Egypt. When Nelson learned of the French capture of the island, he guessed the French target to be Egypt and sailed for Alexandria, but passed the French during the night of 22 June without discovering them and arrived off Egypt first.

Unable to find Bonaparte, Nelson turned back across the Mediterranean, eventually reaching Sicily on 19 July. While Nelson was returning westwards, Bonaparte reached Alexandria and stormed the city, capturing the coast and marching his army inland. His fleet, entrusted to Vice-Admiral François-Paul Brueys D'Aigalliers, was anchored in a line of battle in Aboukir Bay. On 1 August, Nelson, who had returned to the Egyptian coast after reports gathered at Coron revealed the French invasion, arrived off Aboukir Bay. Although it was late afternoon and the British fleet had no accurate charts of the bay, Nelson ordered an immediate attack on the French van. Brueys was unprepared, and his ships were unable to manoeuvre as the British split into two divisions and sailed down either side of the French line, capturing all five ships of the vanguard and engaging his 120-gun flagship Orient in the centre. At 21:00, Orient caught fire and exploded, killing most of the crew and ending the main combat. Sporadic fighting continued for the next two days, until all of the French ships had been captured, destroyed or fled. At the Battle of the Nile, eleven French ships of the line and two frigates were eliminated, trapping Bonaparte in Egypt and changing the balance of power in the Mediterranean.