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            ISO standard - environmental performance of superyachts
            First-Ever ISO Standard Assesses Environmental Performance of Superyachts

            February 28, 2026 By Diane M. Byrne

            Armada Club - private membership club
            Armada Club Redefines Superyacht Access With Private Members’ Model

            February 27, 2026 By Diane M. Byrne

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            December 2, 2025 By Marie Cullen

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            June 1, 2026 By Diane M. Byrne

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            February 18, 2026 By Diane M. Byrne

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            December 5, 2024 By Diane M. Byrne

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            January 16, 2024 By Marie Cullen

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            December 19, 2023 By Diane M. Byrne

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            August 11, 2026 By Diane M. Byrne

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            July 27, 2026 By Diane M. Byrne

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            June 28, 2026 By Marie Cullen

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            Why Montenegro Is Attracting More American Superyacht Cruising Enthusiasts

            August 9, 2026 By Diane M. Byrne

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            The Pontine Islands, a Must-Visit Superyacht Charter Destination

            February 22, 2026 By Megayacht News Staff

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            Where to Charter a Yacht in 2026

            November 30, 2025 By Megayacht News Staff

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            August 10, 2026 By Diane M. Byrne

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            June 20, 2026 By Ken Kremsler

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            Port 32 Palm Beach Gardens Marina Opening in December

            June 13, 2026 By Ken Kremsler

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            Nik Storonsky, Owner of Yacht Nixie, Sued by Over “Effective Cause”

            August 5, 2026 By Diane M. Byrne

            Carlo Borlenghi in 2005
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            August 3, 2026 By Diane M. Byrne

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            Remembering Bob Leslie, 50-Year Yacht-Brokerage Veteran

            July 25, 2026 By Diane M. Byrne

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            May 2, 2026 By Diane M. Byrne

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            Yacht Adventurer II Owner Peter Holt & Former Captain File Lawsuits Claiming Drug Smuggling, Extortion

            April 30, 2026 By Diane M. Byrne

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            5 Biggest Yacht News Stories of the Year

            December 31, 2025 By Megayacht News Staff

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            Marc Friedland - Viva superyacht guest experience
            Marc Friedland Designs Yacht Experiences Before Guests Board

            July 24, 2026 By Kim Kavin

            Nick Boksa of Boksa Marine Desgin
            Boksa Marine Design Leadership Changes & Office Expansion Positioning Firm for Future

            February 21, 2026 By Ken Kremsler

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            January 24, 2026 By Marie Cullen

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            Megayacht News Leadership Series: Alexander Dreyfoos, Silver Cloud Owner

            September 6, 2016 By Diane M. Byrne

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            Megayacht News Leadership Series: Roberto Zambrini, Mondomarine

            August 1, 2016 By Michael Verdon

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            Megayacht News Leadership Series: Antonio Romano, Hot Lab

            July 1, 2016 By Frances and Michael Howorth

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            Jasmine Chong and Jason Tabalujan, yacht Celestia
            Jasmine Chong & Jason Tabalujan: Building Celestia to Bring Their Family Home

            August 17, 2026 By Megayacht News Staff

            Lurssen yacht Nixie sea trials; owner Nik Storosky
            Nik Storonsky, Owner of Yacht Nixie, Sued by Over “Effective Cause”

            August 5, 2026 By Diane M. Byrne

            Richard Hadida
            Richard Hadida: Carpe Diem With the Sailing Yacht Lush

            July 14, 2026 By Megayacht News Staff

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            August 15, 2026 By Ken Kremsler

            David King founder Princess Yachts
            David King, Princess Yachts’ Founder & Longest-Serving Employee, Dies

            August 10, 2026 By Diane M. Byrne

            Ensar Çabuk Sirena Yachts USA
            Ensar Çabuk Becomes New Head of Sirena Yachts USA

            August 8, 2026 By Ken Kremsler

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            March 2, 2026 By Marie Cullen

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            November 1, 2025 By Diane M. Byrne

            International SeaKeepers Society Is Honoring Jimmy Buffett
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            September 26, 2025 By Diane M. Byrne

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            August 16, 2026 By Megayacht News Staff

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            August 14, 2026 By Megayacht News Staff

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            August 7, 2026 By Ken Kremsler

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  • About
Home / Yachts / Soliloquy, the “Super-Green” Superyacht
Soliloquy is the super-green superyacht

Soliloquy, the “Super-Green” Superyacht

June 2, 2009 By: Diane M. Byrne

Commit the name Alastair Callender to memory. While he may “only” be a university student, he has more professional experience in boat design than some of his older peers. More important, his understanding and implementation of eco-friendly technology in Soliloquy just may revolutionize the megayacht business.

As part of his final-year coursework, Callender designed the project, a 58-meter (190-foot) yacht that relies on solar, wind, and hybrid marine power technologies. Those technologies include rigid wings that can fold down when not needed. Now, don’t dismiss the concept as a simple school project that will get tucked away in a notebook. Callender successfully approached Solar Sailor to request permission to use its patented solarsails in his design and to sponsor the proposal. Solar Sailor is an Australian company that works with a variety of boatbuilders, naval architects, and ship operators. In addition, Callendar will showcase the design when he speaks at the Future of Superyachts Conference in Mallorca later this month.

When he could have designed any number of megayacht concepts, why did Callender choose a “green” one? Simple: “In this ever-increasing environmentally conscious time, I wanted to focus my attention on looking at possible solutions to some of the current problems associated with the superyacht industry,” he explains. “Eco-luxury should no longer be viewed as an oxymoron. ‘Soliloquy – the Super-Green Superyacht’ is a true metaphor to show that this ideal is viable.”

In a sense, the past few years of Callender’s life have been leading to this moment. At the tender age of 16, the young Brit was profoundly impressed by what megayacht designer Andrew Winch had to say during a talk, and he decided there and then to pursue a career in superyacht design. After winning the Sir Peter Blake Award for achievement in sailing and teaching the sport in Greece for a few months, Callender landed a job in Winch’s office – all before enrolling in the boat-design classes at Coventry University. While at school, Callender additionally landed a six-month internship at Princess Yachts, and he also worked with the design team at Northshore Yachts.

Soliloquy is a super-green superyacht with proven technology

When it comes to Soliloquy, Callender is taking his experience one step further. While he initially envisioned the yacht appealing to an owner – sailor or not – who intends to make a smaller carbon footprint, he believes Soliloquy holds equal appeal among owners who value innovative design and features. The look of the yacht, whether the sails are upright or folded down to blend with the superstructure (see above), is certainly innovative. Note, too, the overall sweep of the superstructure and the openness of the design, providing plenty of alfresco areas on the main deck (see below). Cold-molded construction and the use of renewable materials inside, as well as woods from sustainably managed forests, reflect both eco-friendliness and originality.

But renewable energies are the key components of Callender’s design brief. In fact, he strove to meet RINA’s Green Star Plus certification. Introduced last fall, the notation is given solely to new-construction vessels making a significant investment in design solutions, onboard equipment, and operational procedures that far lower emissions and fuel consumption when compared with regulatory requirements.

For example, Soliloquy’s superstructure was designed to house three automated and pivoting rigid-wing solarsails. Using Solar Sail’s technology, the wings can move independently to optimize use of the wind and/or the sun. The superstructure additionally features a photovoltaic surface, revealed when the wings are upright, to absorb even more sun energy. Thanks to the use of a hybrid power system, all of this solar energy gets stored in Soliloquy’s batteries, and Callender says that the yacht would be capable of running up to 8 knots on solar energy alone after just 12 hours in the sun. That sun energy additionally powers all onboard electrical systems; no need for gensets, which emit sound, vibration, and of course gases.

If you’ll be attending this month’s superyacht conference, pay close attention to what Callender has to say. No doubt he’ll be in a position someday soon to make an even bigger impact on this business.

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Categories: Sailing Yachts, YachtsTags: Alastair Callender, Soliloquy

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