On 31 August 1779 Boreas, under the command of Captain Charles Thompson, captured the French corvette Compas, of eighteen 6-pounder guns, which was carrying a cargo of sugar.[Note 1]Compas, which was armed en flute, put up resistance for about 20 minutes, with the result that she suffered nine men killed and wounded before she struck.Boreas was part of a squadron under the command of Rear Admiral of the Red Hyde Parker on the Jamaica station.
^Compas had been launched on 12 September 1776. She had originally been intended as a training corvette for 40 students at the École de la Marine at Havre, but it closed in March, before she was launched. The Royal Navy did not take her into service. French sources report that she was armed with eighteen 8-pounder guns.