Yacht "Eclipse", Roman Abramovich, 340 Million Euros

• Luxury yacht (similar to the last three types of yachts, with more luxurious finishings/amenities)
Propulsion
Motor yachts typically have one or two internal combustion engines that burn diesel fuel. Depending on engine size, fuel costs may make motor yachts more expensive to operate than sailing yachts. Biodiesel for marine propulsion is in the experimental stage (e.g. Earthrace).