It was not long before the French sloop came into view; she had sailed out into deeper waters for the night and was now patrolling off the Rosetta Mouth. Fortunately a wind came up from the southwest, and by raising some canvas the galleot was able to run before it, overshooting the river-mouth and making excellent speed towards the east—as if she intended to go in at the Damietta Mouth, a hundred miles away, or to break loose altogether and make a run for some other port. The sloop’s skipper had no choice but to bite down hard on that bait, and to chase them downwind. When she had drawn abeam of the galleot, and begun to converge toward them, al-Ghuráb struck the canvas, wheeled about, and set the oar-slaves to work rowing upwind. The sloop came about in response. But lacking oars, she could only work upwind by tacking, and so she had no hope of keeping pace with the galleot. The gap between the two vessels was about half a mile to begin with, and grew steadily as they rowed towards the snarl of interlocking and ingrown sand-bars that guarded the Nile’s Rosetta Mouth.