All parts of the SL 33 are built out of Carbon Fiber Prepregs.
SL 33 one design:
Mast, main boom, center tube, beams, daggerboards, rudders and tillers are all built out of solid carbon fibre Epoxy prepregs which are cured in an autoclave with 6 bars pressure and 120 degrees temperature.
The hulls are built out of carbon fibre Epoxy prepregs with a Nomex honeycomb core and cured under standard vacuum and 100 degrees temperature. All reinforcements and bulkheads are made out of solid carbon.