Hello,
my WB 120 at that time had softwood (maybe Spruce) as end pieces on aluminum spars and mast, marine plywood behind GRP as bulwark and waterproof glued plywood on rudders and centerboards.
I built the bulwark, gaff and boom from oak during the refit, the mast from Canadian Spruce and the centerboards from marine grade aluminum.
I sanded the wooden rudder blade and sealed it with several cages of epoxy resin. I covered the benches in the cockpit with oak.
Hope this helps.
Gerold
my WB 120 at that time had softwood (maybe Spruce) as end pieces on aluminum spars and mast, marine plywood behind GRP as bulwark and waterproof glued plywood on rudders and centerboards.
I built the bulwark, gaff and boom from oak during the refit, the mast from Canadian Spruce and the centerboards from marine grade aluminum.
I sanded the wooden rudder blade and sealed it with several cages of epoxy resin. I covered the benches in the cockpit with oak.
Hope this helps.
Gerold