Designed by Max Zhivov, the 154-foot Sky Ya concept is one of the most eco-friendly yachts in its class. The semi-displacement hybrid motor yacht melds a curvaceous, modern design with solar-power technology to envision an environmentally conscious future for yachting. Solar panels line the roof, and the outdoor deck holds space for gardens so travelers can enjoy verdant flora even while at sea. A helicopter pad is located at the bow.

Inside, three guest cabins and a master suite provide plenty of room to rejuvenate, while the main-deck saloon showcases an open dining room and lounge area. Full-length windows allow guests to take in the ocean views. Utilizing its diesel and electric engines, the yacht will travel at speeds of up to 18 knots. (max-zhivov.com)