IMO 9693367 , Call Signal A6KZ , Flag United Arab Emirates.
Class : Germanischer Lloyds.
Ship Type : Luxury Yacht.
Build in 2013 by Lürssen Sy as " AZZEM ".
Tonnage : grt / nrt / tdw - 18.000 / - / 1.381.
Azzam (Arab. "resolute") is a private yacht built by Lürssen Yachts. Azzam was launched on 5 April 2013 at 180 metres (590 ft) in length as the largest private yacht in the world. She has a beam of 20.8 m (68'4") and an unusually shallow draft of 4.3 m (14'1")
Azzam was commissioned by Khalifa Al Nahyan, the president of the United Arab Emirates. The yacht is currently listed for charter without the price. According to Motor Boat & Yacht magazine, the yacht is not available for actual charter, and the charter listing, similar to Roman Abramovich's Eclipse, is aimed to avoid European taxation (charter yachts are exempt from property tax).
Look at the small fishing boat going out to sea in the foreground to get an idea of her scale in comparison.
On another note I read of a fellow filling his Range Rover petrol tank in Saudi at 2.5p/litre, 3.25 pounds to fill against 180 pounds to fill in the UK. You may as well buy a gas guzzler car/boat as it's not an issue.