They could cross the open oceans under sail and then switch to oars for lightning-fast hit ... Proof in the planking The secret of the Viking ship lay in its unique construction.

SAILOR:Okay. Go. NEIL OLIVER:'If there was no wind, the Viking boats could be powered by oars. But they really came into their own as sailing ships. Then they were able to travel much, much further.

If there was no wind, the Viking boats could be powered by oars. But they really came into their own as sailing ships. Then they were able to travel much, much further. But not all Viking boats ...

"The blue water, smitten by many oars, might be seen foaming far and ... replica ships continue to confirm the excellence of Viking ship design. Much less is known about Viking navigation methods ...