Word was sent out to the chiefs of the land, bidding them to join the king with the ships required by the laws of the kingdom. Among his own ships was one called the Short Serpent, and he had just finished another of great size and beauty which he named the Long Serpent. Never had so noble a ship been seen in the north. It was 112 feet long and had 104 oars, while it could carry six hundred warriors, none being over sixty or under twenty years of age except the great bowman Thambarkskelver, who was but eighteen, yet was so skilful with the bow that he could shoot a blunt arrow through a hanging raw ox-hide. With sixty ships and as many transports Olaf sailed south to Wendland, where he was well received by his old friend King Burislav, whose daughter Geira had been his first wife. The Wend king royally entertained him and made a just settlement of Queen Thyra's estates, and Olaf prepared to sail homeward again. But dark clouds of war were gathering on his path. Sweyn Forkbeard of Denmark was hostile both to Burislav and Olaf and the king of Sweden was leagued with the Danish king. To detain Olaf while they gathered their fleets, these kings employed Sigvalde, the cowardly chief of the Jomsvikings, who had fled from the battle with Earl Haakon, to visit and lure him into blind confidence. The treacherous viking succeeded. His smooth, soft ways won Olaf's heart and the open-minded king put complete trust in him. Sigvalde finally, after bringing about much delay by his false arts, engaged to pilot Olaf with his own fleet through the dangerous waters of the coast, and even induced him to divide his ships by sending part of them in advance. The traitor meanwhile kept in communication with King Sweyn and promised to lure Olaf away from his main force and lead him into the snare they were laying for him. Chief among the enemies of the Norse king was Earl Erik, the son of Earl Haakon, whom he was eager to avenge, and King Olaf the Swede, who was present with a fleet. With sixty or seventy ships of war these foes of Norway's king lay hidden behind the little island of Svolder, in Olaf's track. For a number of days they awaited him with impatience. At last Olaf's transports appeared within view of the leaders of the hostile fleet, who were posted at an elevated point on the land. The day was fair, the wind gentle and favorable, and the foremost ships sailed onward, seeing nothing of the foes. When King Sweyn saw among them a large and handsome ship he was sure it must be the Long Serpent, and said: "Olaf of Norway is afraid to-day, for he carries no dragon-head on his ship." "That is not the king's ship," said Earl Erik, "but that of Erling of Sole. I know it by its striped sails. Let it pass, for it will be better for us to have Erling out of the fray."