Heesen Yachts in the Netherlands has announced the launch of M/Y Sibelle, a 50 metre fully custom motoryacht, below 500 gross tonnage with an aluminium hull and superstructure.
The vessel is large enough to offer her owner and his guests everything they need without compromise, whilst being small enough to allow plenty of freedom to anchor in bays with crystal clear water.
The experienced owner, the captain and his team, were deeply involved in the conception of this yacht.
While attracted by the benefits of the fast displacement hull form (FDHF) the owner requested a plumb bow; this radical and dramatic design feature implemented not only a styling tour de force, but also a dedicated study to ensure the best possible course-keeping — especially in high wave conditions — and to allow greater comfort on board.
The shipyard revealed that tank testing at the Wolfson Unit MTIA with a free running self-propelled model in extreme wave conditions proved the exceptional ability of the hull design, both in comfort and course-keeping, and confirmed the extraordinary high-performance figures that are inherent to the FDHF.
Sibelle will be able to reach a maximum speed of 18.5 knots with only two 1,000kW MTUs installed. In consequence, an ocean-crossing range is achieved with minimal fuel capacity; only 45,000 litres are required to comfortably transit the Atlantic, leaving plenty in reserve.
Naval architect Perry van Oossanen comments: “The modest propeller tunnel design allows for 1.5 metre diameter propellers. The hull is fitted with Quantum XT zero-speed fins, and bilge keels, offering a maximum reduction in roll angle at anchor. The design of the hull, the appendages and the propulsion arrangement have been focused on obtaining the best fuel efficiency possible, without sacrificing performance and comfort when running in waves.”
The owner appointed Frank Laupman from Omega architects and Mikhail Labazov and Andrei Savin from Architectural Bureau A-B Studio to create the exterior design, the general arrangement and the interior décor on this yacht.
Sibelle will be tested in the North Sea and delivered to her owner by the end of February 2015.