Rolls-Royce unveils “green” Crystal Blue yacht
Rolls-Royce has unveiled a superyacht concept showcasing the advantages of advanced ship intelligence solutions and hybrid propulsion based on LNG fuel and battery power.
Introduced during the Global Superyacht Forum (GSF) in Amsterdam this week, the 62-metre Crystal Blue yacht and its attendant support vessel Blue Shadow have been developed to optimise the yacht’s superstructure for greater guest use and comfort.
Announcing the development in a keynote speech at the GSF event, Oskar Levander, Rolls-Royce SVP 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.”
Crystal Blue features 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 the yacht, however, this system allows the yacht to remain in the right spot on the water, without using an anchor.
At first glance, it seems Rolls-Royce has forgotten to include a bridge in the design but, as Levander explains, “it’s just been moved”.
“Our ship intelligence and remote-control concepts have allowed us to design a yacht for the future that has the bridge located below the bow, inside the vessel. The crew is able to monitor and control the vessel using sophisticated sensors, cameras, display screens and situational awareness technologies, but an internal bridge frees up the traditional area of the bridge in the forward part of the superstructure to let owners and guests enjoy a panoramic vista that is traditionally only enjoyed by the crew.”
The bridge console is based on the Unified Bridge design that Rolls-Royce has already delivered to a number of ship types, including superyachts. It also features technology Rolls-Royce and Svitzer demonstrated earlier this year in the first remote-controlled commercial tug.
The Rolls-Royce Blue Ocean team has also incorporated a “safe room” into the design, where guests and crew can shelter in the event of an unauthorised boarding. Once inside, the crew can override the controls and operate the yacht remotely or direct a shore-based centre to pilot the vessel.
Designed for a minimum of 12 passengers and 12 crew, Crystal Blue has 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 low-weight carbon Azipull thrusters provide enough power to achieve a maximum speed of 20 knots.
Although LNG fuel is increasingly specified for commercial vessels, particularly coastal ferries, the size of the fuel tanks and a lack of LNG bunkering infrastructure has been a major barrier to the yacht sector embracing the cleaner, odourless fuel.
“This is where Blue Shadow comes in,” explained Henrik Alpo Sjöblom, project manager in the Rolls-Royce Blue Ocean team.
Operating in convoy, Blue Shadow is a smaller 42-metre, remotely-controlled, steel-hulled support vessel used for transporting and launching the mother ship’s tender, helicopter and toys. It also allows designers to make better use of the aft area of Crystal Blue for guests, such as by including an infinity pool or a beach area, and doubles up as the owner’s personal LNG bunkering barge.
“Burning LNG has clear advantages over marine diesel oil for the yacht sector,” said Sjöblom. “There is no smoke, it doesn’t emit any unpleasant odours or fumes, and it meets stringent emissions regulations, allowing yachts to enter otherwise prohibited ecologically sensitive waters.
“We have dimensioned Crystal Blue fuel tanks for a range of 3,000 nautical miles without refuelling but with the Shadow’s additional fuel capacity, the range increases to 4,400 nautical miles, meaning that most of the typical yachting areas are accessible.”
Explaining the reason behind the development, Levander added: “With Crystal Blue and Blue Shadow, we can more effectively showcase how new digital-based ship intelligence solutions can offer unique possibilities, greater capability and added value to the luxury yacht market, both for new and existing vessels. The systems and technologies Rolls-Royce has available can bring ‘green’ values and previously unheard of levels of comfort to the yacht owner.
“We have a huge offering within Rolls-Royce and our portfolio is highly compatible with the marine leisure market. With Crystal Blue we can show what can be achieved and how the yacht of the future might look. We can give complete freedom to yacht designers and, in so doing, better fulfil yacht owners’ dreams.”