Hi Zilka

Welcome to the forum

Not sure if any of the regulars on here have a ferro boat but I would probably ask the question the the Cruisers Forum and see how you go
www.cruisersforum.com/forums/f47/

The other thing you could do is wander around a few Marinas and see if you can find a ferro boat and see if you can get the contact number for the owners and ask them the question as i believe that Marinas require that you have an insurance policy

I did read (could be rubbish) a while ago because of the difficulty of finding an insurance company there was a dodgy company overseas that would supply you with a policy at a minimum cost to show Marina operators to get a berth but if you made a claim they would not pay

Regards Don