The biggest yacht in the world by internal volume is Dilbar, owned by Russian billionaire Alisher Usmanov[1]. Dilbar is recognized as the world’s largest private yacht when measured by displacement and also has one of the most expansive interiors among all private yachts globally[1]. In terms of length, the yacht Azzam is longer, but Dilbar’s immense internal volume secures its claim as the largest yacht overall. Other contenders either remain under construction (such as Somnio and REV Ocean) or are slightly smaller in size[4].
It is worth noting that ownership of many of the world’s largest yachts is often confidentially maintained by royal families and billionaire business figures[3]. For instance, Sheikh Mansour bin Zayed Al Nahyan owns Blue, one of the latest large entrants, and the Al Nahyan royal family from Abu Dhabi owns several of the world’s most significant yachts[1][7]. However, as of 2025, Dilbar remains unmatched in terms of interior volume and continues to be referenced as the biggest overall[1][2].
References
- [1] The World’s Largest Yachts 2025: A Showcase of Luxury – SuperYachtFan
- [2] The World’s Biggest Yachts – YachtBuyer
- [3] Top 25 Largest Yachts in the World 2025 – Miami International Yacht Sales
- [4] Largest Yachts in the World 2025 – YachtWorld
- [7] The 10 Largest Yachts in the World 2025 – Princess Yacht Charter