ARCADIA 36M
ARCADIA 36M
When so much of the design commissions is predominantly modern design it is a very satisfying experience to be asked to develop a yacht along Classic lines.
This 37m is for a discerning and very experienced US client . We are proud to have been chosen to design his new boat.
One advantage of working with an owner who has built custom yachts before is that he understands the steps that should be taken to guarantee the best possible design and eliminate the usual problems that arise as a result of insufficient preparation not just in the design , which is often rushed, but also in the detailed Specification.
The work started by producing an extensive preliminary design and 250 page Specification. Even Huisman Shipyard had not seen anything quite so detailed from a Designer. We have the Client to thank for that since he gave us the opportunity.
Following this procedure the documents were sent to tender and ultimately the Client chose the Royal Huisman Shipyard.
The first step was to optimise the design taking into consideration the requirements from the Interior design, to be done by Dick Young, and the Systems and Machinery largely developed by Huisman's team and based on our Preliminary Systems design work and Owner's input. From this study it was realised that the boat needed to be longer. The hull was increased, whilst all the stability and propulsion requirements were checked and slowly, but surely, the best design evolved.
Once the length was established we could now optimise the hull shape in detail. To do this we have asked MARIN., the famous Dutch Hydrodynamics Institute to help us with their pre-design CFD analysing tools. 3 phases were completed where the wave patterns were simulated and pressure distribution mapped at cruising speeds. Shifts in the hull shape volume distribution were tested until the best possible compromise was achieved. After this, a final optimised design was put forward for the tank tests, where further checks were done, for resistance, best turning direction of propellers, Bow thruster orientation, Bilge Keels position, etc. A very thorough and complete set of tests by any means.
The exterior design was developed to suit the Client's wishes of a Classic looking yacht. A tall order following in the wake of Feadship, DeVries, Diana, S&S, etc. We tried to develop a shape that reminded us of the best features of that type of yacht. Old fashioned values such as a pretty sheer and uncomplicated design. Low profile, as with our recent 47m project, was also high in the agenda which was not easy as we had to maintain 2.1m headroom throughout and plenty of under floor storage.
To assist us in the decision of certain deck features, 2 foam models were milled from our 3D CAD files. This is one of the benefits of being able to design the design in 3D.
Being a displacement yacht, a fast boat speed was not a priority. Rather the emphasis was put on Sea Keeping and a very long range at around 11 Knots. In fact the boat is optimised for a cruising speed 11.75 Knots. This required a very large amount of tankage to store 47000 litres of fuel, and consequently a big difference between Lightship and Full load. To avoid any lack of stability we designed ballast tanks which are filled with fresh water as the need arises. This is complemented by active fins stabilisers and conventional bilge keels.
Regarding the systems everything is designed to be as simple as possible but inevitably we still have a fairly complex boat with all the comfort and amenities expected nowadays.
Together with an excellent Interior we feel this boat is a very good example of a yacht exquisitely built and an example of the ideal blend between Tradition and Modern Technology.
Principal Characteristics
L.O.A 36.0 m 118.0 Feet L.W.L 31.0 m 101.7Feet Beam Max 8.15 m 26.7 Feet Draught (max) 3.00m 9.84 Feet Displacement 250 Tons 550000 Lbs Main Propulsion (min) 2 x 720 hp Speed Maximum 13.5 Knots Cruising 11.8 Knots Max Range at 10 Knots 6000 miles Fuel 47000 Ltrs 10352 Gallons Water 10000 Ltrs 3300 Gallons.
PRESS ARTICLES ABOUT ARCADIA
Click on images to download a pdf
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