The Second Battle of Algeciras (also known as the Battle of the Gut of Gibraltar) was a naval battle fought on the night of 12 July 1801 (23 messidor an IX of the French Republican Calendar) between a squadron of British Royal Navy ships of the line and a larger squadron of ships from the Spanish Navy and French Navy in the Gut of Gibraltar. The battle followed closely the First Battle of Algeciras on 6 July, in which a French squadron anchored at the Spanish port of Algeciras was attacked by a larger British squadron based at nearby Gibraltar. In a heavy engagement fought in calm weather in the close confines of Algeciras Bay, the British force was becalmed and battered, suffering heavy casualties and losing the ship HMS Hannibal. Retiring for repairs, both sides called up reinforcements,