Composite has a new queen with the launch of Delta’s 164-foot (50-meter), full-displacement motoryacht Arianna. Currently the world’s largest all-composite displacement yacht, according to her builder Delta Marine, Arianna boasts more than 7,500 square feet of living space contained within her 34-foot beam. This space includes an upper-deck owner’s apartment with lounge, private outdoor deck, dining area and an extra cabin for children or family members. SG Private Wealth Advisors managed the build and Delta Design Group created the Polynesian-inspired interior. Tropical hardwoods, blown-glass light fixtures and silk carpets will give guests plenty to admire, but don’t be afraid to touch the furniture: The boat was built with families in mind. Favorite areas while on board may include the large gym, the sun deck with Jacuzzi, lounge chairs and large bar, or the many alfresco dining and relaxation spaces. Arianna’s twin Caterpillar 3512B engines give her a cruising speed of 14.5 knots and a maximum speed of 16 knots. She is expected to become a great addition to the charter market after her maiden voyage. Stay tuned for more on Arianna.