On 9 October news reached Duncan that the Dutch fleet was at sea, and his fleet sailed from Yarmouth Roads to meet them. Beaulieu was already at sea, having been sent in advance with the 74-gun ship of the line HMS Russell and 50-gun fourth rate HMS Adamant to patrol off the Texel. Duncan had them follow the Dutch, expecting that the fleet would attempt to sail towards the British coast. At 7 a.m. on 11 October the three ships signalled a sighting of the enemy fleet to Duncan. The Battle of Camperdown began at around 11:30 a.m., with Beaulieu one of only two British frigates present, alongside the 28-gun HMS Circe. Tasked as a repeating frigate, she was assigned to Duncan's larboard division of the fleet during the battle, with the Dutch commander surrendering his ship at 3 p.m. Beaulieu received no casualties while performing her duties.
