How OP were Viking Longships?

The Vikings were a notoriously powerful empire, despite having very limited access to resources initially. Here's how they took the one resource they had in abundance, and created one of the most overpowered military technologies in history. Credits: Showrunner: Patch (  / tierzoo  ) Art: Marco (  / marco.oa.art  ) Research and Writing: Paola (  / paonavvil  ) Editing: Parker (  / psmotiongraphic  )