Trans RINA, Vol 157, Part C1, Intl J Marine Design, Jan - Dec 2015
model and documentation at the Monaco Boat Show. This enables them to engage in DDI with stakeholders, as a new concept for an owner will take four years before it is finished and presented to the market as a completed yacht. Thus the ‘Future Concept Feadships’ producing a narrative to enhance client meetings. As these are the basis for innovation in this project proposal they will now be reviewed.
The 73m X-Stream (2006) was designed to reduce resistance in order to improve hull efficiency and fuel consumption. The project researched the X-bow, glass panels and diesel-electric pod propulsion. The objective of this study was to increase speed by reducing resistance while limiting the motion of the vessel. The enlarged- ship concept hull, which is longer forward of maximum beam, reduced resistance by 28% for a length increase of 25%. The accommodation volume was reduced to that of a 60m vessel, but the vertical motion was reduced by 20- 25%. This research was used to inform the development of Predator. The F-Stream (2007) was a 55m concept development of the X-Stream, with the design objectives of improved comfort and to prevent seasickness at higher speeds. Motion sensitivity in relation to age and gender were evaluated. This identified a higher likelihood of seasickness in women, but in both genders, there is a much higher susceptibility in people under the age of 20. Comfort as a factor of vessel size and location within the vessel was also evaluated. This identified a preferential area for children’s cabins, and the improvement of comfort with vessel length up to 60m. [5]
The 75m Aeon (2009), examined multiple sources that could provide
sufficient sustainable power for
transatlantic range. Addressing the challenges of how to both minimise emissions and develop new energy sources. Its advanced system utilized green power sources such as biofuel and solar energy. The electric propulsion used a reformer to converts biodiesel to hydrogen to power fuel cells. In the process, there was a reuse the waste products: heat, carbon dioxide and water. The powertrain consisted
of battery power for day
cruising and biodiesel providing additional power while waste heat was used to drive a steam drive system. A significant innovation was the reduction of hotel loads and reusing waste heat to minimize the auxiliary loads of the vessel. Applying the principles of the Passive Design and Passive Haus technology, which uses the exchanged air from an air-conditioning system to pre-treat fresh air resulting in an energy saving of 40%. [5]
The objective of the Breathe (2010) concept was to demonstrate how sustainability could reduce a yacht’s operating costs. It
had a superstructure consumption, by adapting covered with
solar panels, and used the principles of Passive Design to harness the air flow over the vessel during motion to reduce the HVAC load. It also used bio-mimicry to reduce energy
natural
ventilation inspired by the cooling function of black-and- white stripes on zebras and stabilisers using turbucle
features inspired by
ventilation, the contrast of shells over the light hull
whale fins. In terms of the the darker superstructure creates
variations in air
temperature, which in turn creates air current. On Breathe, the air heated by the dark shells rises, drawing cool air from the water surface across the deck, cooling the walls of the superstructure, while the shells also form a surface for flexible solar cells. Combined with the heat recovery of Aeon, the design reduces air-conditioning loads by 40%. The use of long and narrow stabiliser fins with turbucles on the leading edge, increased the stall angle and gave greater lift at low speeds. The wedge hull shape combines the long bow with a wave-dampening after body, resulting in a reduction of trough and transom waves, giving 20% less resistance at 14 knots. [6]
Qi (2011) was designed to provide the ultimate holiday, and includes a health spa and gym with panoramic views. It is named after the eastern concept of a circulating life- force or energy flow that permeates all of creation. The aim of the design was to blend a sense of power with a feeling of peace. The interior had a glass ‘energy tower’ as a focal point, which rises up through all the decks, to the sundeck, which has a spa pool with a central camp fire. At 55m it required transformable interior areas, to facilitate changing layout with environments and time of day. Adapting space for: family use; parties; business; superyacht leisure. The forward deck is particularly flexible. When in use as a viewing deck two balconies can be turned out to offer panoramas over the bow. Alternatively it can be opened up with fins to double its size and create ample space for a party. It can also serve as a cinema with a 180-degree projector screen. In colder climates the deck can be enclosed by sliding glass windows. In terms of technology, Qi implemented the propulsion system developed for Breathe. propulsion modes:
generators provide quiet operation up to 12 knots; range mode, where only the medium-speed
diesel-electric mode, where diesel
It has three the
engine
operates; and full-speed mode, where both the main engine and the generators are combined for maximum power. This system reducing fuel consumption by 30% is now applied on the 83.5m MY Savannah. [5]
Feadship Royale (2013) has been created for King Willem-Alexander and Queen Maxima of the Netherlands.
It was created to serve two distinct
purposes: act as a home-away-from-home for the royal family, and provide a way of showcasing Dutch industry via hosting trade missions around the globe. An all-glass superstructure, combined with all-glass facade wraps and a significant area of glass in the hull. This design is intended to convey the royal couple’s wish to always be transparent and open, as well as making very visible what the Netherlands
has to offer the world. The
increasing use of structural glass in architectural projects offers an opportunity for a Transfer of Innovation to the superyacht industry due to the ovens technology of the size required to bend giant established in architecture. [7]
glass panels being well
© 2015: The Royal Institution of Naval Architects
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