Sailing yacht A is a sailing yacht launched in 2015. The vessel is a sail-assisted motor yacht built in Kiel by Nobiskrug for Andrey Melnichenko. Its propulsion consists of a variable-speed hybrid powerplant with two lineshaft controllable-pitch propellers that is sail-assisted by a three-mast fore-and-aft sailing rig. The freestanding carbonfiber rotating masts were manufactured by Magma Structures at Trafalgar Wharf, Portsmouth. Doyle Sailmakers USA manufactured the three fully automated carbonfiber/taffeta full roach sails. The furling booms were built in Valencia by Future Fibres. The vessel features an underwater observation pod in the keel with 30 cm -thick glass. It is the largest private sail-assisted motor yacht in the world.A was delivered by Nobiskrug on February 3, 2017 and left Kiel on February, 5, 2017. It exited the Baltic Sea in light mode on near-empty fuel tanks in order to clear the Drogden Strait with minimum draught. It underwent final sea trials and the final fit-out at the Navantia shipyard in Cartagena, Spain. According to media reports, A was handed over to the owner on May 4, 2017 in Monaco by the project team led by Dirk Kloosterman having completed her final sea trials in the Navantia shipyard at Cartagena, and final tests and inspections at Gibraltar. Boat International called it the boundary pushing superyacht. Building site: German Naval Yards' deepwater premises in Kiel Builder: Nobiskrug Naval architecture: Dykstra Naval Architects Exterior design: Philippe Starck, Dölker & Voges Interior decoration: Philippe Starck Diesel powerplant: two MTU 20V 4000 M73L 24,050rpm 3,600 kW lineshaft engines Electric powerplant: four 14,050–24,050rpm 2,800 kW hotel generators driving two Vacon 4,300 kW lineshaft motors Transmission: superimposable/clutched diesel-electric transmission controlled by DEIF systems Propulsion: Andritz Hydro / Escher Wyss & Cie. 5-bladed controllable-pitch lineshaft twin screw Emission Treatment: Emigeen, 4x DPF on DGs.
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