Another reconstructed longship is on the whale path headed west, and it has made it to the Orkneys.
The plan is to sail through the Orkney Islands in order, among other things, to avoid the Pentland Firth. That this is not a sailing strategy of recent date is evident from the old Nordic texts. They also describe the dangers of Péttlandsfirdi and speak of the shipwrecks in Svelgr “the most gigantic of all whirlpools”.
A running historical commentary is here.