The 230ft Nourah of Riyad, owned by Prince Turki bin Mohammed bin Fahd Al Saud, was being lifted out of the water for repairs when it capsized.
Yacht owner and Saudi prince, Prince Turki bin Mohammed bin Fahd Al Saud owns the 1415 tonne line
The luxury liner was at a repair yard, the Megatechnica shipyard in Perama, Athens, when it was turned at a 45-degree angle, becoming partially submerged in the water.
The exceptionally expensive accident happened at around midday on Sunday as it was undergoing anti-fouling works.
The yacht’s crew and workers are said to be safe and nobody was injured when it capsized.
There was no marine pollutiuon as a result of the incident.
The 1,415 tonne yacht boasts 11 cabins for up to 22 guests and a crew of 18, complete with a master suite and VIP stateroom.
The yacht, which can reach speeds of up to 19.0kn, also has a Jacuzzi on deck and cinema on board.
She also has a tender garage that allows smaller boats and “toys” like jetski’s to be carried aboard.
The stunning 70 metre long vessel was built by Yachtley in Turkey and delivered in 2008. She is sailing under the flag of the Cayman Islands.
Her exterior was custom designed by Donald Starkey and she was refitted in 2012.
Nourah of Riyad is equipped with an ultra-modern stabilization system which reduces roll motion effect and results in a smoother cruise.
She is powered by two Caterpillar 3,150hp diesel engines and has 170,000 litre fuel tanks that give her a maximum range of 6,000 nautical miles at 14 knots.
She has been spotted all over the world.
The luxury yacht is said to have damaged a neighboring shipyard as well as equipment on board the tourist boat Lamadin, which was also nearby.