alteration, like moving a bulkhead, which has a knock-on effect throughout the yacht. The draughtsman is happy to undertake it now because the change can be incorporated quickly, efficiently and accurately.

We have taken the use of our three dimensional graphics capabilities further with a recent design project in which I am collaborating with Jon Bannenberg. This as yet un-named 37 metre yacht features the Bannenberg touch in many areas. Subtle treatment of styling lines and surprise changes in superstructure surfaces present new challanges for the yacht designer to interpret and translate on to detailed drawings. By entering it into the computer we were able to fair it up and check it by looking at the surfaced model on the screen, then we gave drawings to the builder which showed 1:10 scale sections located at all the structural frames along the full 30 metre length of the superstructure. This allowed them to skip the timeconsuming full size lofting process.

CAD can significantly reduce costs as its potential for more detailed design permits more accurate planning, closer budgeting and an optimum construction programme.

Once the initial concept is drawn on paper the computer can take over and by use of advanced solid modelling techniques produce a unique study of how the finished yacht will appear viewed from any angle. This process automatically allows accurate design information to be used as a basis for the detail work that forms the bulk of the designer's output.