Dutch yard Feadship has announced that its 49.5-metre superyacht Gray Cliffs, known as Project 717 throughout construction, has departed its build sheds and is now en route to sea trials in the North Sea.
The all-aluminium superyacht remained tightly under wraps throughout construction and was first sighted in July 2024 while en route to Feadship's facilities in Aalsmeer for outfitting. She was officially unveiled to the industry last month, when she was launched following the news of her sale in September to a long-standing Feadship owner. Delivery is scheduled for spring 2026.
Read More/In-build 50m Feadship motor yacht Project Fun soldExterior design is angular and low-profiled, with Studio De Voogt touches including a vertical bow and a long, narrow strip of glazing across her superstructure. Interiors have been developed by American studio Marty Lowe in close collaboration with the owner, with renderings revealing a pale, pared-back aesthetic that incorporates bright lighting and granite-esque panelling. Meanwhile, naval architecture is owed to Feadship De Voogt Naval Architects.
“In the exterior design, we extended the lines without allowing the yacht to feel stretched. The widened shoulders along the sides of the sundeck play a key role in achieving this balance. On the main deck, we focused on creating a strong beach atmosphere,” explained Studio De Voogt's senior designer, Jan Schaffers, at her launch.
“When the fold-down bulwarks are open, the deck space and uninterrupted views are comparable to those of a yacht nearly twice this size, enhanced by the generous ceiling on the aft deck," Schaffers added.

The main deck aft is a major social hub thanks to a spacious layout that spills onto the beach club with ample seating, a glass-fronted Jacuzzi and the aforementioned fold-down bulwarks. Forward, guests can enjoy another lounge and dining area, complete with large windows that provide both privacy and expansive views.
Up top, a large sundeck houses the flybridge and a secondary helm station, backed by a 14-person dining table, barbecue, bar and a sofa lounge. Other design highlights include foredeck sunpads and a storage for a Williams Dieseljet 625 and a Williams Dieseljet 450 tender.
Accommodation is for 10 guests across five cabins, including a full-beam owner's suite on the main deck complete with floor-to-ceiling windows, a walk-in wardrobe, a marble en suite, a private study and lounge seating. Guest suites include two doubles and two twins, all on the lower deck, while further quarters accommodate up to eight crew.
The 499GT yacht is equipped with a propulsion technology that has been developed through the Feadship Advanced Electrical Drive programme. Propulsion and steering are delivered by thrusters to reduce drag while enhancing efficiency, manoeuvrability and onboard comfort. She is expected to reach a top speed of 15 knots, with a range of 4,000 nautical miles at a cruising speed of 10 knots.
Gray Cliffs is thought to be the successor to a smaller build of the same name, delivered in 2016 by Feadship featuing a similar slender profile with taut lines and elongated dark glazing from midships to bow. The 33.5-metre Gray Cliffs is currently listed for sale with Edmiston asking €17,000,000.
According to BOATPro, Feadship currently has 18 yachts under construction or on order. The yard's second-largest build, the 101.2-metre superyacht Project 1014, is also scheduled for delivery this year.
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