Still with the Channel fleet in May 1794, "Latona" and her compatriots were waiting for a large grain convoy bound for France from the United States. Howe's fleet arrived off Ushant on 5 May and the frigates "Latona" and "Phaeton" were tasked with circumnavigating the island and looking in the Brest roads for the French fleet. When they returned to report the French were still in port, Howe set off to try and intercept the convoy before it could gain the protection of the Brest fleet. After almost two weeks spent searching the shipping lanes and finding nothing, the British fleet returned and on 19 May, "Phaeton" and "Latona" were again dispatched to monitor the roads.