Design #195 WRTWR Maxi

been achieved by working on a wide range of areas, starting with the UBS design and our extensive experience in all sizes of IOR designs since. These areas include:

A. Careful optimization of proportions to improve performance relative to rating, confirmed by extensive tank testing.

B. Development of faster hull shapes through tank testing. These included 15 separate tests with 8 foot models with different basic shapes and many variations in shape and trim.

C. Development and utilization of a very sophisticated method of analysis of tank testing results to link into a velocity prediction program and a race course program that enables time around an array of courses to be predicted for an extensive range of style and size of yacht to assist in choosing the optimum design.

D. Extensive large scale tank testing and computer analysis of keel planform shapes, volume distributions, and section shapes (profiles) to sweep away the guesswork currently being utilized by other designers and develop keels of substantially less drag. This test program utilized a 16 foot model and tested 11 different keel configurations.

E. A construction research program that examined and tested a massive range of materials and combinations. This started with obtaining real world achievable properties of a wide range of available fibers from various manufacturers, then tested different combinations of materials and fibers in complete shell laminates, and finished with destruction testing of laminates and even full size panels of the side and bottom of a maxi including frame structures.

This has yielded a considerable saving in weight over what were already the lightest maxi structures without compromising strength, which translates directly into performance through lower pitch inertial and considerably less