The business of leisure

Design Unlimited has launched the MC155 trimaran concept, a design and build collaboration with Germán Frers and McConaghy Boats.

Photography by Design Unlimited

31 August 2017


Design Unlimited’s new 46.8-metre (155-foot) composite multihull concept features exceptionally low drag to deliver the kind of running costs expected on a monohull of half its size. It is expected to have a top speed of 24 knots and a range of 2,500 nautical miles at 14 knots.

The modern and clean profile of the MC155 design includes a vertical bow, leading aft to futuristic curved sponsons that provide stability and efficiency on the water.

A truly international yacht, the UK-based Design Unlimited studio created the concept with Germán Frers providing naval architecture and styling and McConaghy Boats developing the engineering and systems on board. Specialist engineering for the yacht’s composite elements was provided by Pure Design.

Tank testing at the Potsdam facility of DNVGL revealed impressive results for hydrodynamic resistance, pitch and roll, and gave the concept the green light for production.

The MC155 will have accommodation for up to nine guests in four cabins, including a panoramic master suite on a private upper level with an aft deck featuring a helipad.


The 11.3-metre-wide main saloon and interior dining area leads onto a large aft deck which will be a focal point for social gatherings. The aft deck is a sheltered space that features a bar and a pool with flanking staircases that lead down to the swimming platform. The tender and jetskis are discreetly stowed in the aft of the hulls and accessed by guests via stairways from the sides of the aft deck.

With a pared-back design and colour palette, the interior has been created with business as well as leisure in mind. The main reception room’s spaces can be closed off to become private meeting areas. The design features an exceptional degree of soundproofing for a “relaxed and peaceful environment” for owner and guests, who will be tended to by six crew.

To reduce the load on the yacht’s generators and HVAC system, the yacht’s glazing has integrated heat-reflective technology to reduce the effects from the sun.


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