as part of the First Fleet, her master was John Marshall and her surgeon was Dennis Considen. She left Portsmouth on 13 May 1787, carrying 208 male convicts, together with officers and 34 other ranks of the New South Wales Marine Corps. On the way Marshall suspected that the convicts had a plan to mutiny. An informer named two ringleaders, whom Marshall then transferred to . There they received 24 lashes each and then were again transferred, this time to . She arrived at Port Jackson, Sydney, on 26 January 1788. On leaving Port Jackson on 6 May 1788, in company with Charlotte, she travelled to China. On 17 May 1788 the two ships landed at Lord Howe Island for birds and vegetables, then sailed for Whampoa. En route, the ships became the first European vessels to pass among the Marshall and Gilbert islands. Further north, they made landfall on Tinian in the Northern Marianas, where both ships were forced to anchor. The long sea voyage had depleted Scarboroughs stores, and scurvy had become rampant among her crew. Fifteen of the sickest men were brought ashore on Tinian and housed in tents on the dunes, while the remainder of the crew foraged for food. While anchored off Tinian, both vessels were nearly blown onto shore by strong winds, but disaster was averted when their captains decided to cut the anchor ropes and raise sail to move off shore. After several weeks recovery on Tinian, Scarboroughs crew had returned to sufficient health for the voyage to resume. In easy sailing weather, Scarborough and Charlotte reached Macau on 9 September and Whampoa shortly afterwards. There the EIC chartered them as an "extra ship". They received cargoes of tea and made ready to sail to England. Departing Whampoa on 17 December, the ships reached St. Helena by 20 March 1789 and arrived in England on 15 June. Voyage with the Second Fleet Scarborough returned to New South Wales with the notorious Second Fleet. In company with and , she sailed from England with 253 male convicts on 19 January 1790. Her master was again John Marshall and the surgeon was Augustus Jacob Beyer. On the 18 February, several convicts plotted a mutiny. They chose as their leader Samuel Burt, who revealed the plot to the ship's officers. The plotters were interrogated, and several were severely flogged. Others were chained to the deck. Scarborough