BY IAN CAMERON

A luxury yacht concept aimed at highlighting ship intelligence and hybrid propulsion based on liquefied natural gas (LNG) and battery power in the marine leisure sector has been outlined by Rolls-Royce.

Designed for 12 or more passengers and 12 crew, the 203 ft. (62 m) long Crystal Blue is based on a composite or aluminium hull operating a power plant based on the Rolls-Royce hybrid LNG/Battery SAVe-CUBE system configuration.

The machinery consists of twin LNG-fuelled 16V4000 MTU M65-N generator sets working in parallel with a battery bank to provide 1MWh of genset-free power during port stays. Two carbon Azipull thrusters provide propulsive power to achieve maximum service speeds of 20 knots.

Oskar Levander, Rolls-Royce senior vice president Concepts and Innovation, said: “Crystal Blue has been designed specifically to show how new technology can meet the yacht sector’s increased demand for higher performance, greater operating ranges and increased levels of guest comfort, without impacting the environment.”

One of the other features is the use of an intelligent dynamic positioning system which automatically controls twin azimuthing thrusters and a TT1100 bow thruster – technology that is usually found on offshore support vessels that must maintain their positions next to oil rigs to within a couple of metres. On board Crystal Blue, however, this system allows the yacht to remain in the right spot on the water – without using an anchor.