About
The world feels very far away aboard JACK. No deadlines. No noise. No compromise. Just horizon, silence, and the unmistakable feeling that life is finally being lived properly.
The McConaghy MC75 JACK is not simply another luxury catamaran. She is a rare collision of superyacht comfort, advanced carbon engineering, and genuine offshore performance. Built entirely in carbon composite by McConaghy Boats and designed by the renowned Ker Yacht Design studio, JACK delivers something very few yachts ever achieve: breathtaking speed without sacrificing absolute refinement. This is the kind of yacht that changes plans. The kind that convinces owners of large motor yachts to reconsider everything they thought they wanted from life on the water.
At anchor, JACK feels like a private waterfront penthouse suspended above crystal-clear water. Expansive glazing, retractable side windows, and a beautifully restrained interior create an atmosphere that is calm, architectural, and effortlessly luxurious. Every space has been designed to connect you with the ocean, not separate you from it. Under sail, she becomes something else entirely. Lightweight carbon construction, hydraulic centreboards, and race-bred hull design allow JACK to move with extraordinary efficiency and composure. She is capable of exceeding 21 knots under sail while remaining remarkably stable, quiet, and comfortable for guests onboard. Her pedigree is not theoretical either. JACK claimed both Line Honours and Multihull Class victory in the 2024 ARC Transatlantic, covering over 3,100 nautical miles with speed and ease.
Yet perhaps the most impressive thing about JACK is not the performance. It is the freedom. The freedom to disappear into the islands for months at a time. To wake up in complete silence powered by solar energy and advanced 48V onboard systems. To entertain family and friends in total comfort without marinas, crowds, or schedules dictating the experience. This is luxury without excess. Performance without aggression. Adventure without hardship.
For the buyer who has already experienced the predictable world of conventional yachting, JACK offers something far more compelling.
- A complete escape.
- A new pace of life.
- And the ability to simply cast off and leave the rest behind.
Contact the team today to find out more!
Specifications
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Disclaimer
The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
The Multihull Company is pleased to assist you in the purchase of this vessel though the vessel may be listed with another brokerage company.
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I recently sold my Lagoon 450 with the Multihull Team. I would highly recommend their services. The professionalism and personal treatment I received was greatly appreciated.
Great Service, Great People
Helped me through the process.
I would go through them again in a future purchase.
The Multihull Company made the process of buying our boat easy and predictable. Both our agent (Francisco Montaner) and Andrew Holland communicated well and educated/informed us of each step in the process. I highly recommend The Multihull Company for those shopping for a catamaran!
Chuck at The Multihull Company is the real deal.
He helped us find our Lagoon 40 after genuinely listening to what we needed, not just what he had to sell. He let us visit the boat multiple times, answered every question honestly, and helped us make a confident decision on a major purchase.
What impressed us most was the post-sale support. Once the paperwork was signed, Chuck was still picking up the phone, offering referrals, and helping us work through the early stages of liveaboard life. That kind of follow-through is rare.
If you are looking for a multihull and want someone who knows the boats and actually cares about the outcome, Chuck is the person to call.
We just purchased a 2025 Nautitech 44 Open with The Multihull Company. The process of getting here has been great, and we could not have asked for a better agent. We worked with Conor, whom we met at the 2025 Cannes Boat Show. We started our search for a cruising catamaran in Florida at the beginning of the year. We spent a couple of months looking at different boats/models within our price range and quickly narrowed it down to what really mattered to us, in part thanks to the wealth of knowledge and expertise our broker provided. When we found a perfect match in Montenegro, Conor and The Multihull Company did not hesitate to continue supporting us and to lead the efforts from start to finish with great care and transparency. Communication and support have been outstanding throughout this entire process. Conor, in particular, showed great compassion and care, going above and beyond to ensure that no stone was left unturned and that we would be able to safely and happily sail off into our big adventure.
Successful relationships cannot exist without it. At The Multihull Company we base every relationship on a firm commitment to earning and retaining our client’s trust.
Advice of any kind is valuable only when grounded in hard-won expertise. It too, must be trustworthy. Trust and expertise define the heart and soul of The Multihull Company. We are a team of skilled professionals who thrive on providing expert, trustworthy advice and service to catamaran and trimaran sailors around the globe.
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