Built by Dutch shipyard Feadship and delivered in 1982, Synthesis 66 features exterior design and naval architecture by De Voogt, with interiors by Larvor. Refitted in 2022, the custom-built displacement yacht showcases classic Feadship craftsmanship, complemented by updated guest spaces, modern amenities and long-range cruising capability across a 347GT platform.
The interior of the yacht for sale was refreshed during her 2022 refit, introducing contemporary finishes while preserving elements of her original character. The main saloon is arranged around clean architectural lines, warm teak detailing and a neutral colour palette designed to create a calm onboard atmosphere. Original cabinetry remains in place throughout the living spaces, complemented by new ceiling panels, upgraded lighting systems and refreshed furnishings. Forward, a formal dining area seats up to 12 guests and is separated from the saloon by etched glass panels that provide privacy while allowing natural light to filter through the interior. Elsewhere, the bridge benefits from updated upholstery and leather finishes, while the galley was completely renewed with stainless steel surfaces and commercial-grade appliances to support extended cruising and onboard entertaining.
The motor yacht for sale retains the timeless profile associated with classic Feadship yachts. Constructed with a steel displacement hull and aluminium superstructure, she features expansive exterior deck spaces designed for both relaxation and watersports. One of the yacht's standout features is her hydraulic swim platform, which lowers into the water to simplify tender launching and provide direct access for swimming. The bridge deck aft serves as a central social hub, equipped with a bar, barbecue and jacuzzi alongside adaptable sun awnings and fold-out sunbeds. Newly laid teak decking and refreshed paintwork completed during the refit contribute to the yacht's well-maintained appearance, while the foredeck incorporates a davit system and dedicated storage space for two jet skis. A Nuova Jolly Prince 38 RIB and Zodiac tender further enhance the yacht's cruising and exploration capabilities.
Accommodation aboard the custom yacht for sale is arranged for up to 10 guests across five en suite cabins. The main deck owner's suite features generous wardrobe storage, a dedicated beauty cabinet and an en suite bathroom finished with stone surfaces, new fittings and custom mosaic detailing. Guest accommodation comprises a spacious VIP suite, two cabins that can be configured as either doubles or twins, and an additional guest cabin, providing flexibility for families and charter groups. Separate crew quarters accommodate up to nine crew members across five cabins.
Powered by twin 549hp Caterpillar D379TA diesel engines, Synthesis 66 reaches 13 knots and cruises at 11 knots. With a 44,000-litre fuel capacity, she offers a range of up to 3,500 nautical miles, supporting extended cruising.
Synthesis 66 is listed for sale on YachtBuyer at a current asking price of €12,000,000.
According to YachtBuyer MarketWatch, the largest yacht database in the world, there are currently 17 Feadship yachts in the order book.
Feadship has one of the most recognisable custom yacht portfolios in the industry, spanning landmark projects such as the 92m superyacht Aquarius, one of the largest yachts ever delivered by the Dutch shipyard, the award-winning 99m superyacht Madame Gu, named Motor Yacht of the Year at the 2014 World Superyacht Awards, and the pioneering 84m superyacht Savannah, which became the world's first hybrid-propulsion superyacht upon her delivery in 2015.
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