DAS BOOT™... defines hull drag and appendage lift for North VPP


Das Boot is one of the most powerful free surface Hydro CFD programs in the world. Das Boot is a Potential Flow, Free Surface Code used for sail and rig development for America’s Cup teams, TP52s and Volvo Ocean Racers. The results from Das Boot are used to generate hydro resistance files for the North Sails VPP.
© North Sails
Shown ABOVE and BELOW is a hull being run through a series of heel angles to produce a matrix of hull drag to be used in the VPP. In this example, Das Boot is testing a hull at a speed of 5.5 meters/sec., a heel angle of 25 degrees and a yaw angle of 2 degrees.
 
© North Sails