 Neptune was built during the early years of the war with Revolutionary France and was launched in 1797 . She almost immediately became caught up in the events of the mutiny at the Nore , and was one of a few loyal ships tasked with attacking mutinous vessels if they could not be brought to order . The mutiny died out before this became necessary and Neptune joined the Channel Fleet . She moved to the Mediterranean in 1799 , spending the rest of the French Revolutionary Wars in operations with Vice @-@ Admiral Lord Keith 's fleet . After refitting , and spending time on blockades , she formed part of Lord Nelson 's fleet at the Battle of Trafalgar , and was heavily involved in the fighting , sustaining casualties of 10 killed and 34 wounded . 
