Stuart M Roy
Naval Architect - Yacht Designer
©   Stuart M Roy 2001-2014
Thank you for visiting my web site.

I work as an independent Naval Architect & Yacht Designer, based at Warsash near Southampton on the central south coast of the UK.

I specialise in design, technical work and consultancy relating to sailing yachts and power craft from 1.5m (5’) up to 40m (130’)  in length.
Yacht & Powercraft Design Services Ltd
Registered 2001 in England & Wales, Company Number 4252254


Telephone: 44 (0) 1489-583346   Mobile: 07803-724317

Located at Warsash by the River Hamble, 4 miles from J8 or J9 of the M27.
It was a great pleasure to assist Lord Sterling with the  feasibility studies, initial design, stability assessment & ongoing technical support for this magnificent Diamond Jubilee project.
Skep, a roomy 25ft gaff cutter has completed sailing trials. Home-built in wood/epoxy, she has the patented Steynor lifting keel.
88ft “GLORIANA”, built by master boatbuilder Mark Edwards, was named by HM The Queen at Greenland Pier on 25th April 2012.  She led the Diamond Jubilee Pageant on 3rd June 2012. Click here for my story of Creating Gloriana.
3D Stability Model
Gloriana after Naming by HM The Queen
Technical Support for Yacht and Boat Projects......

I offer a wide range of design, consultancy and technical services to yacht and powerboat owners, purchasers, boat builders, manufacturers, boatyards and organisations -  all at very reasonable prices.  This work is supported by nearly 40 years experience of designing sailing yachts and power boats, in addition to extensive academic and professional qualifications as a Naval Architect and Chartered Engineer.

Located beside the River Hamble on the central south coast, close to the famous Solent yachting centres, I can provide high quality computer-aided design work for one-off new-build projects, production boats and the conversion of existing vessels. In addition, I offer a range of technical support services which includes the production of 3D computer models, performance prediction for sail or power craft, stability analysis, full stability booklets and damage survival analysis for MCA Codes, stability assessments for RCD compliance and technical advice.  

With the benefit of Internet-based communications, my services are available to clients across the world.  Since 2002, work has been completed for clients based in Australia, Denmark, France, Germany, Ireland, Singapore, Sweden, The Netherlands and the USA, as well as many from the UK.  Click here to read some comments from clients.

This 67-page site contains details of the various services and some explanation of the technology involved, including design work, a re-powering project and short video clips of tank testing in progress.  In addition there are pages of general interest from several Boat Shows, the America's Cup Jubilee Regatta, the J-Class Yachts, workboats and other interesting yachts and boats I have seen over the years - see the  Site Directory.

Learning yacht and boat design in the computer age is both very rewarding and great fun.  I can offer a range of opportunities to develop new skills, including hands-on Yacht Design Training using the superb Maxsurf suite of integrated hull design and analysis programs including Maxsurf, Hydromax, Workshop, Hullspeed and SPAN. Training is also available on AutoCAD LT and other CAD programs.
(UK Register of Learning Providers No. 10007688, see  

If you are a buying a yacht or motor boat, perhaps as a first-time buyer, then I can provide a full technical service to get you on the water safely, including pre-purchase technical advice, boat safety check, sea trial, engine test, valuation for insurance and basic training afloat.

In addition, I can offer FREE ADVICE by Email on many questions relating to yacht and powercraft design, surveying and naval architecture.