Pure Adventure

The Pure Adventure is a Viking ship mentioned in How to Train Your Dragon of the Book series.

History
Seven years before the events of Book 1, Stoick lost his favorite ship to the sea, presumably around the waters of the Isle of Berk. However, after the huge storm on the night of Thor'sday Thursday, this ship was washed up onto the island next to the Highest Point.

"Along the way they even passed the wreck of one of Stoick's favorite ships, the Pure Adventure, lost at sea seven years before, and now perched crazily on a rock three quarters of the way up the biggest hill on Berk."

- Book 1

Though no other description of the Pure Adventure is given, it might be assumed it is designed as a typical Viking longship.