An ultra-luxurious floating building shaped like a sleek, futuristic black vessel, designed for elegance, mobility, and sustainable innovation. The structure combines the aesthetics of a superyacht with the functionality of a modern skyscraper, clad in matte black carbon-fiber panels with metallic accents that shimmer under the sunlight. The hydrodynamic hull ensures smooth and silent navigation, powered by a hybrid propulsion system integrating hydrogen fuel cells, advanced electric thrusters, and kinetic energy harvested from ocean waves. The rear of the vessel features an expansive helipad, designed as a retractable platform with integrated navigation lights and a polished metallic surface for day and night operations. The helipad flows seamlessly into a multi-tiered rooftop area, featuring infinity pools, lush greenery, and an open-air observation lounge with panoramic views of the surrounding ocean. At the bow, a dramatic glass observation deck juts out over the water, creating a space for relaxation, dining, or stargazing. Inside, the interiors redefine luxury, with double-height ceilings, open atriums, and curved walls adorned with polished wood, marble, and metallic finishes. Skylights and floor-to-ceiling windows flood the spaces with natural light, offering uninterrupted ocean views from every angle. The vessel hosts world-class amenities, including high-end boutiques, gourmet dining experiences, private luxury suites, a spa and wellness center, and a high-tech conference hall. Glass elevators and spiral staircases connect the levels, ensuring fluid movement throughout the building. The ship's advanced mobility system allows it to traverse the open sea with ease, featuring adaptive stabilizers for comfort even in rough waters. Retractable side platforms unfold to create docking areas for private yachts, jet skis, and submarines, enhancing versatility for leisure and exploration. A cutting-edge AI navigation system monitors weather, optimizes routes, and ensures energy efficiency, making the vessel an ecological marvel. Additional features include desalination systems for water sustainability and intelligent climate control for interior comfort. The render captures a striking nighttime scene, with the black vessel illuminated by soft, ambient LED lighting tracing its contours, cutting through calm waters under a starry sky. The helipad is active, with a helicopter approaching, while the vessel's sleek design and glowing reflections in the water create an unforgettable image of power, luxury, and cutting-edge innovation.