Tahe TECHNO 293 ODTECHNO 293 OD Start, progress and race. What helped the Techno 293 OD become such a successful Class Racing board was its general performance and easy control. With high volume and moderate outline, the Techno 293 OD provides a stable platform for learning to windsurf. A daggerboard provides directional stability and makes sailing upwind a breeze. In light winds, the near 3 meter length helps the board really glide through the water, making