New Launch: Heesen 80m YN 19480

In late 2021 Heesen launched YN 19480, Project Cosmos at the shipyard in Oss, its new eighty meter custom build flagship which is to be christened Galactica. At 80 metres, with a gross tonnage of 1,700GT and a top speed of almost 30 knots, she is the biggest and fastest all-aluminium yacht ever built. The challenges involved in creating such a large and complex yacht are extreme, but made a perfect fit with Heesen’s history and expertise. Precision aluminium construction, high performance and the finest Dutch craftsmanship are steeped into the DNA of this shipyard. Cosmos is the ultimate expression of Heesen’s ability to build daring projects that stretch the imagination of its engineers and crafts people. Thanks to the dedication of the Heesen teams and the shipyard’s loyal subcontractors, who all worked tirelessly through the pandemic, the yacht was launched on schedule in perfect Dutch style. What makes Project Cosmos so impressive is its immense size combined with a remarkable top speed of almost 30 knots. This is achieved thanks to the lightweight and low-drag hull design, honed to perfection by Heesen’s naval architects on an iteration of the Fast Displacement Hull Form devised by van Oossanen, and assembled, millimetre-perfect, by Heesen’s welders. Ensuring sufficient longitudinal strength was one of the biggest technological challenges facing Heesen’s engineering team, who designed and patented the Backbone,  an intricate full-length structural reinforcement system. Power comes from traditional, if highly refined, diesel propulsion of four MTU 4830hp  engines, two gearboxes, variable-pitch propellers and ultra-innovative Promas rudders. Cosmos’s elegant exterior comes from the renowned British studio of Winch Design. Clean lines, a sporty silhouette and the extensive use of glass create a timeless, dynamic profile, which will look as good in twenty years as it does today at launch. Sinot is responsible for the light and soothing interior design that makes guests feel at home from the moment they step aboard. While the overall palette is neutral, splashes of a range of blue hues are infused into the design throughout. The piece de résistance is undoubtedly the beach club, with its side and stern platforms. The backlit onyx bar with centrally positioned seating is the focal point of this ample and airy space close to the water. With the size, weight and performance of Project Cosmos so intimately connected, Sinot collaborated closely with Heesen’s in-house engineers to ensure that their stringent weight calculations were always met. Following her launch, Project Cosmos remained at Heesen for commissioning before undergoing intense sea trials in the North Sea commencing in February. She was delivered to her owners in Spring 2022 but no pictures have appeared as yet of the new Heesen eight meter flagship in navigation.

Technical Data:

LOA - 80.07 m (262.6ft)

Beam - 13.40 m

Draft - 3.50 m * medium load

Displacement - 1,700 GT volume

Fuel Capacity - 120,000 l

Water Capacity - 30,000 l

Accommodation - twelve guests in six cabins, nineteen crew in ten cabins

Engines - 4 x MTU 20V4000 M73L 4830hp

Propulsion - line shafts

Speed - 29 knots max, fourteen knots cruise

Range - 4000 nm at fourteen knots

Hull Shape - fast displacement FDHF with bulb 

Construction - aluminium

Project - Winch exterior, Sinot interior, Van Oossanen naval architect

www.heesenyachts.com