think your problem will be that each country has its own regulations and we are probably a long way off a United States of Europe, but rest assured our government seems hell bent on changing that
Anyway you say offshore, are thinking of opperating between countries ?
Madera Ribs claim to make the "Ribcraft professional offshore Rigid Inflatable Boats" never knew that
They also make "Ocean RIB Rigid Inflatable Boat Manufacturer"
wonder if Malcom knows his Workshop is in the Netherlands, not Portchester, Southern England?
Be also interesting to see what this means "Our RIBS are well known because of their high fuel capacity to reach long distances" if you visit them perhaps you could ask them what long distance trips they have done ?