Re: Circumnavigating the world with NO prior sailing experience ever before
They started in 2009 "sailing from Gothenberg through Europe" . Only this will have gave them more experience than the average sailor. We are talking about many thousands of miles troughs difficult waters (North sea, Biscay) and certainly they had taken several months.
If they had no experience probably those where the most difficult days. Sailing everyday (or almost) they would soon be very experienced sailors at least in what regards average experience.
They have also a very forgiving steel heavy boat but a very slow one:
"crossing the Atlantic and arriving into the entrance of Rio de Janeiro. .. The trip across the Atlantic took 3 months."
I would be very feed up being 3 months way from a Taverna (probably they stopped on the way, I hope). That is SLOW. The ones that made that voyage for the first time (more than 500 years ago) took less than a month.