On 2 October 1779, Jupiter captured two French cutters, each of 14 guns and 120 men. The Royal Navy took both into service essentially under their existing names. One was Mutin, under the command of Chevalier de Roquefeiul. She was pierced for 16 guns but carried 14, either 4 or 6-pounders. The other was Pilote, under the command of Chevalier de Clonard. She carried the same armament as Mutine (or Mutin). The cutters surrendered after an engagement that left Mutin dismasted. Jupiter shared the prize money with and , , and . Jupiter fought at the battle of Porto Praya in 1781.
