The French brig Duc de Chartres was built between 1779 and 1780 at Le Havre as a 24-gun privateer. As a privateer she captured one British warship before in 1781 the Royal Navy captured her. The Royal Navy took her into service as HMS Duc de Chartres. She then captured several American privateers and armed merchant vessels, and one French naval corvette in a noteworthy single-ship action. The Navy sold Duc de Chartres in 1784.
Privateer
Duc de Chartres captured HMS Pluto, a 16-gun sloop, on 30 November 1780. Pluto, under the command of Commander Thomas Geary, was about 140 miles south west of the Scilly Isles in drifting fog when she sighted a ship. Cautious, Pluto prepared for action and when the two vessels passed each other, they exchanged broadsides. Duc de Chartres turned and gave chase, catching up with her quarry. Unable to escape, and outgunned, Pluto struck. In spring 1781, Admiral George Darby sailed a fleet to Gibraltar to relieve the siege for a second time. On the way the fleet captured Duc de Chartres, the Spanish frigate Santa Leucadia, and the French brig Trois Amis. Although executed the actual capture of Duc de Chartres, the entire British fleet of 42 vessels shared in the resulting prize money. At the time of her capture Duc de Chartres was under the command of Jean-Baptiste l'Écolier. The Royal Navy took her into service as HMS Duc de Chartres. The capture of Leocadia took place in the action of 1 May 1781, off Brest. The Royal Navy took her into service as HMS Leocadia.
HMS ''Duc de Chartres''
Between 26 May and 17 SeptemberDuc de Chartres was at Portsmouth undergoing coppering and fitting. The Royal Navy commissioned Duc de Chartres under Commander John Child Purvis on 7 October 1781 and he immediately sailed her for North America. Around August 1782 Duc de Chartres captured the Connecticut letter of marque schooner Turn of Times. She was armed with four guns and had a crew of 25 men under the command of John Cook. She had sailed to Demerara and was on her return voyage when the British captured her and sent her into Bermuda. On 9 August 1782, Duc de Chartres encountered the French navy's corvette Aigle, of 22 guns and 136 men. In the subsequent hour-long action, Aigle lost 13 men killed, including her captain, and 15 wounded; Duc de Chartres had no casualties. On 15 March 1783 the British frigates and, and Duc de Chartres captured the Massachusetts letter of marque Julius Caesar. Julius Caesar was a privateer of eighteen 9-pounder guns and carried a crew of 100 men under the command of Captain Thomas Benson, of Salem. Her captors sent her into New York City where the Vice admiralty court condemned her. Duc de Chartres captured the Connecticut armed brig Thetis on 2 April. Thetis, of 100 tons and six guns, had a crew of 21 men under the command of Robert Colfax. She was tried and condemned at New York. The highly successful action against Aigle led, on 1 September 1783, to Purvis receiving promotion to post-captain. Commander John Shairp replaced Purvis. Then in 1784 Captain William Afleck replaced Shairp for the purpose of sailing Duc de Chartres back to Britain.
Fate
Duc de Chartres was paid off in May 1784. The Navy sold her on 1 July for £700.
