As far as I can tell at this moment there are no other agreed upon class rules In F104 except the point mentioned in the various postings above.

There has been a proposal to add additional limits to this class like :

Source : http://class104.over-blog.org/categorie-1161866.html

-1- 2-up sloop + spi
-2- 1-up uni + spi
-3- Only poly- or vinyl-esther are allowed and only glass fibre, sandwhich PVC, or wood-epoxy
-4- All other part must be of (constant crossection) extruded aluminium.
-5- Carbon only allowed in boards and blocks.
-6- max lenght 5.52 mtr
-7- max width 2.55 mtr
-8- minimum ready to sail weigth 135 kg
-9- maximum corrector wieght = 5 kg


However I have found no agreement or even in depth discussion on this proposal so I guess it is just that ; a proposal.

In my opinion the F104 class and "national" events at this time are nothing more then a fleet race of boats that happen to share a very similar handicap. In my recollections the French used to split of these boat into a seperate fleet for several years already before it was rebranded as the F104 class. During that time this fleet was also typically 20-30 boat strong, the bulk being Spitfires and Mattia Esse's; both designs that have been around for over 10 years already.

Wouter