The sloop departed Portsmouth on 24 February 1779 joining with the Continental Navy ships and in preying on British shipping in the North Atlantic. Seven prizes were captured early in April, and brought safely into port for sale. On 18 June, "Ranger" was underway again with "Providence" and "Queen of France", capturing two Jamaicamen in July and nine more vessels off the Grand Banks of Newfoundland. Of the 11 prizes, three were recaptured, but the remaining eight, with their cargoes, were worth over a million dollars when sold in Boston.