Royal Huisman Reveals 85m Project 410 as World’s Largest Sloop

Royal Huisman has brought 85-metre Project 410 into the public eye at Monaco Yacht Show 2026 as the yacht moves through the final stage of completion in Vollenhove. The Dutch yard says the 280-foot sailing yacht will become the world’s largest sloop when completed, while retaining a design brief centred on sailing performance rather than scale alone.

The unveiling gives the clearest view yet of a project that Royal Huisman has kept closely guarded during construction. Frers Design is responsible for the overall concept, exterior design and naval architecture, while Wetzels Brown has developed the interior.

Project 410 moves closer to the water

Royal Huisman says Project 410 is approaching launch as completion work continues at its Vollenhove shipyard. At 85 metres, the yacht is set to rank among the ten largest sailing yachts in the world as well as becoming the largest yacht to carry a sloop rig.

The design brief called for a yacht capable of being readied for sailing quickly and of delivering useful performance even in lighter wind conditions. Frers developed a hull form with sufficient volume for two decks around a single mast, while keeping the deckhouse comparatively compact.

A single-mast sailing yacht at exceptional scale

Project 410 uses relatively high freeboards to increase privacy and weather protection without abandoning the visual proportions expected of a performance sailing yacht. Royal Huisman says the naval architecture combines low draft with high stability, with the intention of allowing the yacht to reach destinations while operating at relatively low heel angles.

The rig is a major part of the engineering challenge at this scale. Royal Huisman sister company Rondal has developed the carbon mast, boom and integrated sailing system, bringing the yard’s structural and sailing-systems expertise into the same programme.

Regeneration, batteries and silent operation

The technical platform also incorporates systems connected with Royal Huisman’s Tidal Shift sustainability programme. These include energy regeneration while sailing, large-capacity battery storage, quiet operation and the ability to operate in a silent mode.

The combination is intended to reduce onboard energy demand while improving comfort when the yacht is sailing or operating at anchor. It also demonstrates how large sailing yachts can use the yacht’s propulsion and electrical architecture differently from an equivalently sized motor yacht.

Wetzels Brown develops the yacht from the inside out

Wetzels Brown began with the interior experience before working with Frers on how the accommodation, exterior and naval architecture would connect. Large hull windows, skylights and generous ceiling heights are used to bring daylight and sea views into the principal living spaces.

The main guest areas are arranged on one level within the hull, with a double-height entrance leading towards the saloon and an aft veranda connecting with the beach club. As Project 410 approaches the water, Monaco marks the point at which one of Royal Huisman’s most secretive builds becomes a much more visible part of the sailing-superyacht fleet.