Before we started building the boat, we needed a design. The design aspects were quite a few. Some requirements were set from the very beginning (ex. rule compliance), and some we invented ourselves for performance. Those needed a bit of investigation, which we carried out before we started designing.

The obvious design aspects (gray) and the ones we added for extra performance (green)

Pre-design investigation

Weather conditions at the race site (Mondello, Sicily, Italy) in late september turned out to have been fairly stable in the past. We looked at two different weather data sources and both indicated a large likelyhood that we would be racing in wind speeds around 3 m/s.

With Otto and Frithiof being elite 49er sailors, we were comfortable with pushing the design limits, trading handling for speed.

We took a lot of inspiration from the 49er, but also from previous competitors. The racks design is a good example of this.

Modelling and Design

The softwares we used for designing and modelling Linnéa were Rhinoceros 3D for CAD (Computer Aided Design), STAR-CCM+ for CFD (Computational Fluid Dynamics), Abaqus for FEM (Finite Element Modelling), and a VPP-program modified specifically for this project, used for velocity prediction. There is a lot to say about this, so for you who are interested, here is a link to our entire report.