Who owns the biggest yacht in the world?

525 platinum was the biggest yacht Launched in April of 2005. Platinum was originally a collaboration between the Lürssen and Blohm & Voss yards. At 525 feet (160m), Platinum is undisputably… the world's largest luxury yacht. Move over Octopus and Rising Sun! It is estimated to have cost about $300 million. The Platinum Project was originally commissioned in 1996 by Prince Jefri Bolkiah, the younger brother to the Sultan of Brunei. Following the prince's bankruptcy, the yacht was mothballed, until the project was later sold to Sheik Mohammed bin Rashid al-Maktoum, the Crown Prince of Dubai.