"Latona" was part of Richard Howe's fleet in the summer of 1782 and took part in the relief of Gibraltar in September. The supply ships left England on 11 September, escorted by Howe's 34 ships-of-the-line. While rounding Cape St Vincent, on 8 October, "Latona" was dispatched to report on the condition of the Franco-Spanish fleet in the bay of Algeciras. It was known that this force of about 48 ships-of-the-line was poised to attack Gibraltar and, even if no attack was forthcoming, would pose a significant obstacle to Howe's relief mission. She returned two days later with news that an attack had already taken place and had been beaten off. The convoy entered the straits, and successfully delivered the vital supplies, food, and ammunition to the besieged, between 16 and 18 October. The large combined French and Spanish fleet, which had been blown off station, appeared on 19 October but was lured away by Howe's fleet the following day. The faster British ships, never intending to give battle, were easily able to withdraw after a short engagement.