War of 1812: In a three-hour single-ship action, HMS Java (drawing shown) was captured by USS Constitution off the coast of Brazil.

The War of 1812 was fought by the United States and its allies against the United Kingdom and its allies in North America. It began when the United States declared war on Britain on 18 June 1812. Although peace terms were agreed upon in the December 1814 Treaty of Ghent, the war did not officially end until the peace treaty was ratified by the United States Congress on 17 February 1815.

A single-ship action is a naval engagement fought between two warships of opposing sides, excluding submarine engagements; it is called so because there is a single ship on each side. The following is a list of notable single-ship actions.

HMS Java was a British Royal Navy 38-gun fifth-rate frigate. She was originally laid down in 1805 as Renommée, described as a 40-gun Pallas-class French Navy frigate, but the vessel actually carried 46 guns. The British captured her in 1811 in a noteworthy action during the Battle of Tamatave, but she is most famous for her defeat on 29 December 1812 in a three-hour single-ship action against USS Constitution. Java had a complement of about 277, but during her engagement with Constitution she allegedly had 426 aboard, in comparison with her opponent's 475.

USS Constitution, also known as Old Ironsides, is a three-masted wooden-hulled heavy frigate of the United States Navy. She is the world's oldest commissioned naval warship still afloat. She was launched in 1797, one of six original frigates authorized for construction by the Naval Act of 1794 and the third constructed. The name "Constitution" was among ten names submitted to President George Washington by Secretary of War Timothy Pickering in March or May the frigates that were to be constructed. Joshua Humphreys designed the frigates to be the young Navy's capital ships, and so Constitution and her sister ships were larger and more heavily armed and built than standard frigates of the period. She was built at Edmund Hartt's shipyard in the North End of Boston, Massachusetts. Her first duties were to provide protection for American merchant shipping during the Quasi-War with France and to defeat the Barbary pirates in the First Barbary War.