England was the world’s only superpower in the 18th century, projecting its might around the globe with its vast numbers of wooden warships. England’s men-of-war also functioned as the country’s defense, collectively forming “the wooden walls of England” around the island nation.
At that time huge warships lined up one behind the other to form a line-of battle, and blasted away at the enemy’s line of ships. A warship that was large enough to participate in this was called a ship-of-the-line. The most common size of these ships was the 74-gun, meaning that they carried 74 cannons.