The Battle of the Basque Roads was a major naval battle of the Napoleonic Wars, fought in the narrow Basque Roads at the mouth of the Charente River on the Biscay coast of France. The battle, which lasted from 11–25 April 1809, was unusual in that it pitted a hastily-assembled squadron of small and unorthodox British Royal Navy warships, distantly supported by a larger fleet, against the main strength of the French Atlantic Fleet, the circumstances dictated by the cramped, shallow coastal waters in which the battle was fought. The battle is also notorious for its political aftermath in both Britain and France.