 Nielly was put in charge of the third squadron of the Brest fleet, and took part in the Croisière du Grand Hiver, under Villaret-Joyeuse, and in the Expédition d'Irlande, under Morard de Galles, with his mark on the frigate "Résolue" .The fleet was dispersed in tempests which destroyed the "Séduisant" and the frigate "Surveillante"

He reached Bantry Bay, where the "Redoutable" accidentally collided with the "Résolue", destroying her bowsprit, foremast, mainmast and mizzen.A shore party was sent on a small boat, and was captured by the British.