Heesen Yachts has confirmed that following a rigorous programme of Computational Fluid Dynamics simulations, and two days of model tests in the new tank at the Wolfson Unit in Southampton, the hull design of Project Setteesettanta has passed with flying colors.

“The Fast Displacement hull of this 57m yacht was tested in many different sea states, including those representing very harsh conditions,” commented Perry van Oossanen of renowned Dutch hydrodynamicists van Oossanen Naval architects. “We had paid particular attention in the design to achieving low accelerations, in both pitch and roll – which are the measure of comfort onboard – and to ensuring a dry vessel in spite of her reversed-bow design.”

Calm water tests proved equally satisfactory, Perry confirmed: “They demonstrated yet again the top-notch performance of the Fast Displacement Hull Form.”

The 57-meter Project Setteesettanta is a full-custom motor yacht, which was made for repeat clients, who requested a yacht tailored to their lifestyle. Setteesettanta can accommodate 12 guests and 13 crew. A conventional propulsion system and two compact MTU 16V2000M72 (1,440 kW) diesel engines will give the yacht a top speed of 18 knots with a remarkable range of 3,900 nautical miles at 12 knots.

“Project Setteesettanta sports a fourth deck, a large pool and a low stern, which allowed us to flex our mental muscles to ensure the vessel’s stability,” said Sjoerd van Herk, Heesen Senior Naval Architect. “We are currently finalizing the preliminary design, and next month, we will begin the engineering phase. We look forward to the keel laying in September. ”

The yacht is scheduled for delivery in 2026.
Heesen Yachts is a Dutch ship building company that specializes in custom-built superyachts in aluminum and steel from 30m to 70m in size. Founded in 1978, it has launched more than 170 yachts since its inception.
Credits: Heesen Yachts