sentences:  Led by Samuel Mace, this expedition differed from previous voyages in that Raleigh bought his own ship and guaranteed the sailors' wages so that they would not be distracted by privateering.However, the ship's itinerary and manifest indicate that Raleigh's top priority was harvesting sassafras far south of Croatoan Island.By the time Mace approached Hatteras, bad weather prevented them from lingering in the area.