Pretty simple really.

I made the design to support an unstayed class 5 landyacht type of rig. Currently there are 2 alternatives being considered. The first was discussed in the thread and involves glue.

The second is basically a support structure of two tubes working together with the mainbeam and the lower portion of the mast. You can interprete it as a mast with extreme low twin forestays that are also able to withstand compression (something wires can not do). The mast itself will then still need to be made in the class landyacht way. So in boat behaviour and performance there is no difference between these two paths.

Neither is there a difference in the way a windsurfer rig is fitted to the boat if so desired. Just secure the foot of the windsurf rig to the mast stub at the bottom and the boom at the top of the stub. The mainsheet system is then replaced by a setup as used on skiffs like the 49-ers.

Actually is should be possible to jury rig a windsurf sail to an F12 build to take the class 5 rig.

See the drawings and pictures to understand fully what I mean.



I look alot like the ice-flyer landyacht did it, see picture :



The mast stub is actually just the bottom section of the class 5 yacht mast. So in fact you can just take of the surf rig and fit the original rig again. The mainsheet system changes then back to :




Wouter