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 maneuvering to volley fire with the cannons along their broadsides. In conflicts where opposing ships were both able to fire from their broadsides, the opponent with more cannons firing – and therefore more firepower – typically had an advantage.

Michael, popularly known as Great Michael, was a carrack or great ship of the Royal Scottish Navy. She was the largest ship built by King James IV of Scotland as part of his policy of building a strong Scottish navy.