Whereas the latter is a state owned vessel, however (it belongs to Sheikh Mohammed bin Rashid al-Maktoum, the Crown Prince of Dubai), the Al Salamah is in private hands, and although she is smaller -- a mere 140 meters (457ft) long and 23.5 meters (77ft) wide -- she remains the largest, and most luxuriously appointed non-state vessel currently cruising the high seas.

CNN: Al Salamah: The ultimate yacht

No surprise then that Dubai's Sheikh Mohammed bin Rashid Al Maktoum fared the worst.

FORBES: Billionaires

Upon its debut, Abramovich's vessel became the largest privately owned yacht in the world, surpassing Sheikh Mohammed bin Rashid Al Maktoum's Dubai.

FORBES