"Royal yacht" may evoke images of luxury and prestige, but there are plenty of synonyms to capture the same spirit. One option is "state yacht," emphasizing the vessel's importance to government and diplomacy. "Regal yacht" adds a touch of formality, while "imperial yacht" connotes power and authority. For a more personal touch, "royal vessel" or "royal ship" can capture the same majesty while allowing for a wider variety of designs and functions. No matter the synonym used, any vessel used by royalty will always be associated with exclusivity, elegance, and sophistication.