"Scourge" was under the command of Sailing Master Joseph Osgood. Bligh had served as sailing master of during Cook's third voyage. Dampier was aboard as Rogers' sailing master. The civilian master then served as the sailing master. One eighth was divided among the lieutenants, sailing master, and captain of marines, if any. Arthur Dowds was captain James Harte was sailing master and Patrick Brennan was first officer. Baldwin's differences with his sailing master, Johansen, were followed by his recall. Juan Pedro de Vivaldo (Genoa) sailing master. The sailing master oversaw the navigation and sailing of the ship. He joined the crew of Captain Read, being elected sailing master by the crew. During the outward voyage, Bligh demoted Sailing Master John Fryer, replacing him with Fletcher Christian. An American court-martial charged Sailing Master William Harper and Isaac Bowman, captain's clerk, with cowardice. The American sailing master is dead, killed by shots from the "Surprise".