Italian superyacht yard ISA has launched ISA140 Silver Wind. The 43-metre project is a 3-deck planing composite motoryacht featuring exterior design by Andrea Vallicelli. The yacht is scheduled for delivery in July 2014.
Silver Wind carries a unique hybrid propulsion system developed by Siemens and ISA Yachts. The yacht can both run at the maximum speed of 32 knots and a cruising speed of 26 knots with a “traditional” propulsion system consisting of two marine diesel engines driving two Rolls-Royce Kamewa waterjets through reduction gear-boxes, and navigate at low speed of 8 knots with two main engines OFF; the two waterjets are powered by the two electric motors connected to the gearbox.
The two diesel generators also supply power to the electric users. At electric mode, the total fuel consumption is 90 l/h for a range of 2600 nm, so extremely important for yacht transfer without guests onboard, as consumption goes from 55 l/nm at max yacht speed to 11 l/nm with electric mode on. The advantages of hybrid propulsion are countless.
The large flexibility of operation modes in the first place. Then, depending on the operation mode of the vessel, the main engines and generators run less hours per years and, when in operation, at higher loads. Both lead to less required maintenance cost. In addition, the main and auxiliary diesel engines can always operate at its peak efficiency, thus reducing the specific fuel consumption and gas emission. This also result in a drastically lower noise level in overall yacht ambient. It is expected that at 8 knots people on board should have a feeling as to stay on a sailing yacht. Last but not least, there is a drastically improvement of the redundancy. If the generators set fails, two shaft generators will operate the electric users; if the main engines fail, the two generators can power the propellers.
Silver Wind is also fitted with a fully custom-made bridge in full compliance with safety regulation. ISA in-house electronic department coordinates a panel of important names in the field of electronic navigation systems, such as Transas, which made the bridge concept, Team Italia, which designed the bridge console and Rolls-Royce, which provides the custom-made waterjets control system.
The ISA 140 series produces the company’s largest semi-custom superyachts of composite construction with hull and superstructure built from Fibre Reinforced Plastic (FRP). The composite parts of ISA 140, such as the hull, the deck, the superstructure and the accessories, have been built with vacuum assisted resin infusion (VARTM). The hull is one of the biggest one ever made on a single mould and at one go.
Silver Wind provides accommodation for 10 guests in 5 cabins. Interior design will be signed by Nuvolari & Lenard.