The superyachts of tech’s richest billionaires, from Jeff Bezos’ Koru to Sergey Brin’s Dragonfly

But in the rarefied world of superyachts, bigger tends to be better.

Long a status symbol for the masters of the universe, superyachts are defined by their excess, not their practicality, and as the rich get richer, their boats are getting longer.

The trend illustrates an unofficial yachting rule of thumb: The bigger the boat, the richer the owner.

To own a 50-meter vessel, you likely have to be a billionaire.

Over 100 meters long, add a zero or two.

Over the past two years, three of the wealthiest people on the planet — Jeff Bezos, Mark Zuckerberg, and Sergey Brin — have taken possession of yachts over 100 meters long. “It’s a bit of a celebration of your success in life, of wealth,” Giovanna Vitelli, the chair of the Azimut Benetti Group, one of the biggest producers of superyachts, previously told Business Insider.

Decked out with amenities like gyms, spas, pools, movie theaters, and helicopter hangars, these megayachts — broadly defined as over 70 meters long — are custom-built and cost hundreds of millions of dollars.

The comings and goings, customizations, and sheer size of the boats provide insight into how today’s ruling class lives.

New yachts often feature state-of-the-art gyms and wellness areas as longevity has become an obsession of the superrich, and with superyacht owners skewing younger, many have offices and work setups on board.

Here are the largest yachts owned by tech billionaires, or at least those we know about.

In an industry governed by discretion, deciphering who owns what is an exercise in stringing together many clues.

There are likely yachts that have not been publicly recorded or registered.

Evan Spiegel, for example, is rumored to own the 94-meter megayacht Bliss.

If you’re lucky, it turns out money can buy privacy.