Topaz (yacht)  M/Y A+, formerly known as Topaz, is a luxury motor yacht constructed by Lürssen in Bremen, Germany. The yacht's interior was designed by Terence Disdale Design and the exterior designed by Tim Heywood. The boat was launched in May 2012. The long ship has a beam of and has a gross tonnage of 11,589. A+ was built in the same German shipyard as the "Azzam", the world's second largest private yacht. The vessel features a steel displacement hull, an aluminium superstructure and consists of eight decks. This yacht was originally being built in a dry dock but to complete the project, the yacht had to be taken to a dock to be built alongside. A+ is also the world’s ninth largest luxury yacht, launched in 2012. The main engines are twin Pielstick diesel engines, each with power of 7990 hp. This is enough power for the yacht to reach a service speed of 22.9 knots, while the maximum speed is over 25.5 knots. The yacht is also equipped with two diesel generators and an emergency diesel generator. These aggregates provide power to the stabilisers, navigation equipment and all the facilities on board. "A+" is equipped with zero-speed stabilisers, jacuzzi (on deck), double helicopter landing pads, swimming pool, tender garage, swimming platform, air conditioning, underwater lights. There's also a fitness hall, cinema and a large conference room.