1. © SMAR-Azure Ltd, 2010 Contents 1. Aerodynamic Analysis 2. Aerodynamic Optimization Oyster 100’ sailplan study Study conducted using SA-Evolution, a SMAR-Azure technology Boat:Oyster 100’ Sail:blade jib & mainsail Date:November 24 th 2010 Responsible:Sabrina Malpede

2. © SMAR-Azure Ltd, 2010 1. Aerodynamic Analysis INPUT DATA  Design shapes provided by Dolphin Sails  True wind speed12 kn  Target TWA43.3°  Target BS8.93 kn  Heeling angle10°  Sheeting angle12.3° jib / 2° main RESULTS  Thrust11690 N  Side force48020 N  Heeling moment 894.7 kNm  Thrust Coefficient0.40  Side Coefficient1.64  Thrust / Side Ratio0.24 Notes  Sails are flying at appropriate angle of attack  Foresail is developing higher forward thrust Pressure distribution

3. © SMAR-Azure Ltd, 2010 2. Aerodynamic Optimization Results INPUT DATA  Target sailing course at 12 TWS (see previous slide)  Sheeting and heeling angles have been kept fixed Jib design shape  Twist and maximum camber has been evenly reduced throughout the foresail Mainsail design shape  Twist has been slightly evenly increased, while camber has not been changed RESULTS  Thrust12620 N+8.0%  Side force46770 N- 2.6%  Heeling moment 865.6 kNm- 3.3%  Thrust Coefficient0.43+8.0%  Side Coefficient1.59- 2.6%  Thrust / Side Ratio0.27+13% Conclusions  Even if the thrust is increasing considerably, the side force and the heeling moment are decreasing instead, allowing a much higher overall efficiency of the sailplan