Paul Allen — Octopus · #8 · Est. $200 million

Octopus carries a reported $200 million estimate and stands out because its design prioritized exploration alongside comfort. The vessel was outfitted to support deep-water work with submarines, research spaces, and helicopters, giving it a mission-oriented character unusual at this price level. That combination of size and specialized engineering makes the valuation notable beyond conventional measures of luxury.

Microsoft co-founder Paul Allen was associated with Octopus through his broader interest in using technology and wealth to expand scientific discovery. His software career provided the means to back ocean research and other ambitious projects, and the yacht became part of that pattern. The listed price is best understood as a reported estimate, while the association refers to Allen’s historical ownership rather than any present claim.