"What's the quickest way to become a millionaire?"Yes, but it costs about 15-20% of the purchase price in annual running costs... plus you still need to fill it with fuel. Something like that would be about £2.5m to fill the tanks, and you'll get maybe 40 feet per gallon.
On top of that, you'll need crew, furnishings, food and all that other stuff. £100m doesn't go as far as it used to....
"Be a billionaire and buy a yacht"