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You Will Learn All You Need to Know About Alexander Mamut, his Net Worth, his House, Private jet and his Kibo Yacht.

Kibo Yacht

Yacht Name:

Kibo (Grace)

Yacht Length:

81 m (266 ft)


12 in 6 cabins


14 in 7 cabins


Abeking & Rasmussen


Terence Disdale Design




16.5 knots




2,306 ton




US$ 140 million

Yacht For Sale:

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Yacht Charter:

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Alexander Mamut



Mamut Net Worth:

US$ 2.6 billion


A&NN Capital Fund Management


January 29, 1960


Nadezhda Brezhneva (died in 2002)


Nikolay Mamut, Esfir Mamut, Pyotr Mamut


Moscow, Russia / Kensington, London, UK

Private Jet:

Bombardier Challenger (OY-NNA)

Our Super Yacht Owners Database: more than 1,000 Yachts and Yacht Owners.

In 2018 Kibo was sold to John Reece, billionaire and CFO at INEOS. He named the yacht Grace.

Alexander MamutAlexander Mamut

Mamut is a Russian billionaire and investor. He was born in January 1960. He was married to Nadezhda Brezhneva. She died in 2002. He has 3 children (Nikolay, Esfir and Pjotr.) Through his investment vehicle A&NN Capital Fund Management he holds shares in several companies, including the UK based bookshop chain Waterstone’s, the Moscow based bookshop chain Bookberry and the Russian publisher Azbuka-Atticus.

SuperYachtFan received some information, revealing Mamut as the owner of superyacht Kibo.


Mamut also co-owns the Russian online media company SUP Media, which is most known for it’s investment in LiveJournal and the Russian news site

Mamut used to own a 50 percent stake in the mobile phone chain Evroset, but he sold the shares in 2012 for US$ 1 billion to Alisher Usmanov. Further Mamut also owns a large stake in Polymetal. In the 1990’s Mamut was an advisor to Boris Yeltsin.

Does He Own a Private Jet?

Mamut owns a US$ 35 million Bombardier Challenger private jet, with registration OY-NNA. The jet is from 2007.

In 2019 she was repainted in the Netherlands (with similar livery).  The aircraft can accommodate 14 passengers.

Do you know more about a more recent jet owned by Mamut? Please so send us a message.

Where Does Mamut Live?

Mamut owns a large residence in Barvikha, near Moscow. He also owns a large house in Kensington, London.

Howe Much is Alexander Mamut Worth?

Forbes estimates his net worth at US$ 2.6 billion.

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There is more!

Kibo Yacht (Grace)

Kibo is an 81.8 meter motor yacht built by Abeking and Rasmussen and delivered to her owner in June 2014.  She was sold in 2018 and is now named Grace.

2nd Largest Abeking & Rasmussen

At the time of her delivery she was the second largest yacht delivered by Abeking&Rasmussen, just 20 centimeters shorter than Secret.

Kibo has a steel hull and an aluminum superstructure. She is powered by two Caterpillar Engines, which give her a 16.5 knots top speed and a 4,500nm range.

Yacht Kibo Interior

Both her interior and exterior are designed by Terence Disdale Design. The project was managed by Y.CO. One of the yachts noticeable features is the lack of a pool or Jacuzzi, as the owner would never use it..  

Most photos on this page by Anders LINDEN.

Is She Available for Yacht Charter?

The boat is not available for yacht charter. And the yacht is not listed for sale.

Our yacht owners database has more info about yachts, the value of yachts, yacht owners, their source of wealth and net worth.

Yacht Kibo sold, now named Grace

According to some sources the yacht Kibo was listed for sale in August 2018, asking EUR 150 million. She was sold and is now named Grace. Do you know if Mamut is building a new yacht? Please do send us a message.

Update: Kibo was bought by John Reece, CFO at INEOS. His net worth is US$ 4.5 billion.  He also owns the Feadship New Hampshire, now listed for sale. More here.

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Motor yacht Kibo owned by Alexander Mamut
Yacht Kibo built by AbekingYacht owned by Alexander Mamut

Kibo is owned by Russian billionaire Mamut.


Photos by Anders LINDEN.

The yacht Kibo in Stockholm

The yacht pictured in Stockholm, just after being delivered to her owner.

Previous yacht:


Next yacht:

Kingdom 5 KR

Follow the location of the yacht Grace (ex: Kibo) live!

OY_NNA Alexander Mamut jet

His private jet, a Bombardier with registration OY-NNA

Mamut Private Jet

The Superyacht Owners Register, yacht names: #1 to B

The Superyacht Owners Register, yacht names: C to H

The Superyacht Owners Register, yacht names: I to L

The Superyacht Owners Register, yacht names: M to P

The Superyacht Owners Register, yacht names: Q to S

The Superyacht Owners Register, yacht names: T to Z

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Alexander Mamut

Inside The Yacht Kibo

More information at Boat International

yacht kibo interiorinside Alexander Mamut yachtinside Kibo yachtKibo interior

Kibo’s interior is designed by Terence Disdale.

Grace (ex: Kibo) Photo Gallery

Photos by Raphael Belly

Media: Interested in using these photos? Please contact Raphael directly


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