Sigurd Slembidjakn came that summer from the West sea to Norway, where he heard of his relation King Magnus's unlucky expedition; so he expected no welcome in Norway, but sailed south, outside the rocks, past the land, and set over to Denmark, and went into the Sound. He fell in with some Vindland cutters south of the islands, gave them battle, and gained the victory. He cleared eight ships, killing many of the men, and he hanged the others.
He also had a battle off the Island Mon with the Vindland men, and gained a victory. He then sailed from the south and came to the eastern arm of the Gaut river, and took three ships of the fleet of Thorer Hvinantorde, and Olaf, the son of Harald Kesia, who was Sigurd's own sister's son; for Ragnhild, the mother of Olaf, was a daughter of King Magnus Barefoot. He drove Olaf up the country.
Thjostolf was at this time in Konungahella, and had collected people to defend the country, and Sigurd steered thither with his fleet. They shot at each other, but he could not effect a landing; and, on both sides, many were killed and many wounded. Ulfhedin Saxolfson, Sigurd's forecastle man, fell there.
He was an Icelander, from the north quarter. Sigurd continued his course northwards to Viken and plundered far and wide around. Now when Sigurd lay in a harbour called Portyrja on Limgard's coast, and watched the ships going to or coming from Viken to plunder them, the Tunsberg men collected an armed force against him, and came unexpectedly upon them while Sigurd and his men were on shore dividing their booty.
Some of the men came down from the land, but some of the other party laid themselves with their ships right across the harbour outside of them. Sigurd ran up into his ship, and rowed out against them. Vatnorm's ship was the nearest, and he let his ship fall behind the line, and Sigurd rowed clear past, and thus escaped with one ship and the loss of many men.
This verse was made upon Vatnorm : —
"The water serpent, people say,
From Portyrja slipped away."
Footnotes and references:
Vatnorm, the name of this man, means the water-serpent, and appears to have been a favourite name for war-ships also; hence the pun in the lines upon Vatnorm. — L.