The three Korsars of the longboat made Ja suspicious, but when a full explanation had been made and especially when he had examined the rifles of the Waziri, he became convinced of the truth of their statements and welcomed them warmly aboard his ship, about which were now gathered a considerable number of the armada. When word was passed among them that two of the strangers were friends from the outer world who had come to assist in the rescue of David Innes, a number of the captains of other ships came aboard Ja's flagship to greet Tarzan and Jason. Among these captains were Dacor the Strong One, brother of Dian the Beautiful, Empress of Pellucidar; Kolk, son of Goork, who is chief of the Thurians; and Tanar, son of Ghak, the Hairy One, King of Sari. From these Tarzan and Jason learned that this fleet was on its way to effect the rescue of David. It had been building for a great while, so long that they had forgotten how many times they had eaten and slept since the first keel was laid, and then they had had to find a way into the Korsar Az from the Lural Az, where the ships were built upon the island of Anoroc. "Far down the Sojar Az beyond the Land of Awful Shadow we found a passage that led to the Korsar Az. The Thurians had heard of it and while the fleet was building they sent warriors out to see if it was true and they found the passage and soon we shall be before the city of Korsar." "How did you expect to rescue David with only a dozen men?" asked Tanar. "We are not all here," said Tarzan. "We became separated from our companions and have been unable to find them. However, there were not very many men in our expedition. We depended upon other means than manpower to effect the rescue of your Emperor." At this moment a great cry arose from one of the ships. The excitement rose and spread. The warriors were all looking into the air and pointing. Already some of them were elevating the muzzles of their cannons and all were preparing their rifles, and as Tarzan and Jason looked up they saw the O-220 far above them. The dirigible had evidently discovered the fleet and was descending toward it in a wide spiral. "Now I _know_ someone was born on Sunday," said Jason. "That is our ship. Those are our friends," he added, turning to Ja. All that transpired on board the flagship passed quickly from ship to ship until every member of the armada knew that the great thing hovering above them was no gigantic flying reptile, but a ship of the air in which were friends of Abner Perry and their beloved Emperor, David I. Slowly the great ship settled toward the surface of the sea and as it did so Jason Gridley borrowed a spear from one of the warriors and tied Lajo's head handkerchief to its tip. With this improvised flag he signalled, "O-220 ahoy! This is the war fleet of David I, Emperor of Pellucidar, commanded by Ja of Anoroc; Lord Greystoke, ten Waziri and Jason Gridley aboard."