Name: Le Grand Bleu
Value: $1.6 billion 

American businessman John McCaw built Le Grand Bleu, which is one of the world’s largest private yachts. After McCaw was done with it, he sold it to business tycoon Roman Abramovich, who had her completely refitted. Le Grand Bleu was launched in 2000 and built by Bremer Vulkan.

The massive German-built yacht has two 9,730 bhp engines (Deutz). The interior designer for the yacht is Terence Disdale. The yacht has passed from Abramovich to his business partner and friend Eugene Shvidler. Rumor has it that Abramovich bet his yacht while gambling and, unfortunately for him, lost the yacht to his friend.