Design #533 Transpac 52
explore the available rule space. The performance predictions for each of these designs were then combined with wind distributions for the various targeted races to determine the optimum hull parameters and the consequences of being off optimum.
This research program addressed the following principal areas:
- Selection of optimum beam waterline.
- Maximum beam and hull flare effects examining the trade-off between heeled drag and increased crew righting arm.
- Selection of displacement within rule range.
- Effects of being above rule VCG.
- Transom immersion and effective length.
- Forward section shaping to improve the onset of planing and boat handling in waves.
- Appendage size refinement and optimization for particular event priorities – offshore versus around the buoys etc.
- Bulb shaping and style for particular event priorities.
Hull
We have chosen the beam waterline to give the boat exceptional upwind and reaching speed. We have carefully crafted a beautifully fair hull shape, a by-product of the freedom of the box rule format, to minimize the wetted surface that accompanies higher beam. Crew weight supplies a significant proportion of the overall righting moment so the hull exhibits a close to rule maximum beam at the deck. For Design 533
 
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