Phipps was then given command of the newly captured 36-gun in July 1780. "Monsieur" completed fitting out at Portsmouth in October 1780, and Phipps soon scored his first success with her, capturing the 20-gun "Chevreuil" on 15 December. He next commanded her at the relief of Gibraltar in 1781 with George Darby's fleet, and on 10 October that year assisted in capturing the French 22-gun ship "Jason" off Cape Clear. His final command was the 74-gun , which he took over in March 1782. "Berwick" served as part of Lord Howe's fleet for the third and final relief of Gibraltar in late 1782, and was in action at the Battle of Cape Spartel on 20 October 1782. She then sailed to the West Indies with Sir Richard Hughes's fleet, and arrived there in December. "Berwick" was paid off in June 1783, after the end of the American War of Independence, and Phipps went ashore, apparently having no further seagoing commands.