Vulgar the Viking and the Battle of Burp

Vulgar can't believe his luck. He's going on a school trip in a real, live longboat, with oars and everything! And they're going to visit Burp, where a long-ago battle once took place between the Vikings and the, er, Burpers. It was a mighty battle, which the Vikings totally lost. But this time, Vulgar's going to re-write history. He's up for a bit of historical re-enactment, and is sure, one way or another, that a great and noble victory will be his!