Yacht design and naval architecture

Design #13 – Unity24

Designed to cruise the world efficiently at moderate speeds, this composite cruiser offers many advantages.


This vessel uses every litre of fuel far more efficiently than the average planing powerboat – ideal for a world increasingly concerned with increasing energy efficiency and minimising emissions.  The unique combination of a high efficiency hull shape, light-weight composite structure and an innovative and flexible propulsion system means the unity power boat can travel at high semi-displacement speeds for extended periods, while burning significantly less fuel than conventional designs. The vessel can be configured to have an extremely long range at an exceptional passage making speed. Coupled with an environmentally friendly construction the vessel is more versatile and more ecological.


The unity powerboat concept combines advances in hull design, structural engineering and mechanical systems to bring major gains in overall vessel performance. Compared to a conventional planing powerboat the unity powerboat provides:

  • greatly reduced co2 emissions and greatly improved fuel efficiency,
  • reduced power requirements,
  • increased range,
  • improved seakeeping and
  • improved onboard comfort with lower vibration, noise and motion levels

The hull design draws from elements of both power and sailing boat design to achieve the required efficiency to make this concept work. Recent evolutions in hull forms for canting keel racing yachts have shown that sustained moderate to high speeds are achievable with a monohull using sail power alone. With an optimised hull form, the correct displacement to length ratio and a moderate amount of propulsion power, sustained high cruising speeds are possible with a minimum of fuel burn.