Mark my carbon mast was not at the exact weight, i had to add also a corrector weight in the top of 600 grams to meet the required tip weight.
My total boat weight was 105,8 kg but i had to add a corrector weight in total of 6,2 kg incl 600 grams of te mast.
My boat weight 105,8 - 6,2 kg = 99,6 kg originaly as a one up. This was measured after sailing almost year so the boat sucked up some water. When the boat was just finished in the workshop the boat weighted 97,8 kg. The point that i also used a carbon spinpole and some other carbon parts like tiller this will reduce the weight ofcourse. <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />

Regards,
Hans