The trabajo consisted of scraping the barnacles from the hull of the adjacent galley, which had been beached and rolled over to expose its keel. Jack, Moseh, and a few dozen other slaves (for there was no getting round the fact that they were slaves) got to work with various rude iron tools while the Turk prowled up and down the length of the hull brandishing that ox-pizzle. High above them, behind the wall, they could hear a sort of rolling fusillade wandering around the city as the parade continued; the thump of the kettledrums, and the outcry of the siege-oboes and assault-bassoons was, mercifully, deflected heavenwards by the city walls.