All the crew went on board the Alexander , and the Friendship was scuttled ( sunk ) off the coast of Borneo on October 28 , 1788 . The Friendship left Port Jackson on 14 July 1788 in company with Alexander . The crews of both ships were so badly affected by scurvy off the coast of Borneo that enough healthy sailors remained for only one working ship , and the Friendship was deliberately sunk ( scuttled ) on the 28th of October 1788 .