Lürssen Queen K in VeniceMoscow-based Alfa Bank has launched a legal case against the Russian oligarch Oleg Deripaska in a bid to protect itself against the possible default of a $1bn (€780m) loan.
It comes as Deripaska faces a struggle to restructure his outstanding debt to other creditors.
Mr Deripaska is the a member of the Board of Directors and CEO of UC Rusal, a Russian aluminium industry company.
Mr Deripaska, who was last year ranked as the country’s richest man, is also the owner of the 72m superyacht "Queen K" (ex Queen M) built by Lürssen in 2004.
It is said that Roman Abramovich has recently lost £12billion on the Russian stock exchange.
It comes just four days after details emerged of the £200million super-yacht project "Eclipse" Abramovich is having built - set to be the largest private yacht ever constructed.
Many superyachts belongs to Russian oligarchs:
- A: Mr Melnichenko
- Anastasia: Mr Potanin
- Ectasea: Mr Abramovich
- Grand Bleu: Mr Shvidler
- Ice:Mr Kerimov
- Pelorus: Mr Abramovich
- Sussuro: Mr Abramovich
What will be the effect of the recent Russian stock exchange downturn on the superyacht market?
Are the Russian billionaires going to sell their superyachts? 
Source: Bloomberg
