Intrepid machines all of thier hardware in house, and makes all of thier own wire harnesses. The hull infusion process it top notch too, since the boats are often used as megayacht tenders.
You guys need to research more. You said it must have a good design to have only three outboards. Of course, if you need five or six engines to push a boat the hull is either a bad design or the weight is to high. The perfect boat is the one with the least amount of engines to get the job done. Only a poorly designed boat and the owner who is lacking with man goods needs a six engine CC