If he sailed inside the islands, following the northward course of the merchant vessel he had observed the previous evening, that would carry him past Eaststock, the eastern port of Sypolis, which city, itself inland, had two harbours, with the western of which (Weststock) it had communication by water.
Should he continue to sail on, he would soon reach that part of the northern continent which was occupied by the Irish outposts.

On the other hand, to follow the war-ship, east by south, would, he knew, bring him by the great city of Aisi, famous for its commerce, its riches, and the warlike disposition of its king, Isembard.

He was the acknowledged head of the forces of the League; but yet, with the inconsistency of the age, sometimes attacked other members of it.

His furious energy was always disturbing the world, and Felix had no doubt he was now at war with some one or other, and that the war-ship he had seen was on its way to assist him or his enemies.

One of the possibilities which had impelled him to this voyage was that of taking service with some king or commander, and so perhaps gradually rising himself to command.
Such adventures were very common, knights often setting forth upon such expeditions when dissatisfied with their own rulers, and they were usually much welcomed as an addition to the strength of the camp they sought.