Karve

"Then ran up a long red forked flag, with a black raven on it, from the largest ship, and that seemed to be a signal for haste, for the tide was failing, so that some of the foremost men began to stream away from their comrades." &mdash; Charles W. Whistler, A Wessex Thane (cap 15)

Overall strategy
The Norse answer to the Dromond. Has lower armour, but is faster and has an anti-building bonus, making it ideal for attacking buildings and supporting amphibious raids.