Originally Posted by MarkMT
Correct, OD not SMOD, but close to an SM platform in practice.


Incorrect.

Tornado is NOT OD; there are class rules that control the paramaters; originally developed as a boat that could be home built; thus there are +/- tolerances on hull; thus allowing SOME disfferences in hull shapes. Marstoil eventailly won on quality of the boats.

MASTS are strictly (at the moment) SMOD as Marstrol makes them all.

Sails are free within class rules (but there are quite a few measurement points).

Rudder blades are fairy open (again tolerance rules)

Centre boards are tightly controled in shape but not construction (Carbon was banned, but not checked in a while).

Control systems are fairly free.



SMOD - made by one factory from one set (or sets) of molds

OD - made in a number of factories; with tight tolerances and "look" the same; think about putting sails on top of each other. Are all the main sails the SAME shape? Yes; It's an OD. If the sails are different shape it's not an OD.


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