5,5 mt cheap stich and glue sailboat

here a sketc for a small boat i was studing ... all made with 1 cm thiknees okume plywood stich and glue
here first renders, some unroll , and 3d model. It seems to me that with about 15 sheet of plywood it would be made.
i like thinking for it as an open source plan ... so any suggestion is welcome !!!!

 

sorry if in the drawing aren't still bulkheads ,
some more notes : it's made for an easy and fast assembly , inside, sitting area is structural and will support keel loads, also is waterproff giving some unsinkability proprieties.
anyone interessed for more info please write me.

for people that downloaded it :
why don't you tell me any opinion/ critic about it ???

thanks and excuse for my bad english