USS Kearsarge, a Mohican-class sloop-of-war, is best known for her defeat of the Confederate commerce raider CSS Alabama off Cherbourg, France during the American Civil War. Kearsarge was the only ship of the United States Navy named for Mount Kearsarge in New Hampshire. Subsequent ships were later named Kearsarge in honor of the ship.

In the 18th century and most of the 19th, a sloop-of-war in the Royal Navy was a warship with a single gun deck that carried up to eighteen guns. The rating system covered all vessels with 20 guns and above; thus, the term sloop-of-war encompassed all the unrated combat vessels, including the very small gun-brigs and cutters. In technical terms, even the more specialised bomb vessels and fireships were classed as sloops-of-war, and in practice these were employed in the sloop role when not carrying out their specialised functions.