I found this hull on the web. It is quite good to me because of the possibility to customize whatever I want.

The purchase price amounts to € 29 plus € 9 of delivery charges.

If, like me, you’re not a nautical expert but you wish to build up everything from scratch,

my advice is to search the hull on websites like ebay.

The best keywords to use are: “boat hull”, “fiberglass sailboat hull” or similar.

You’ll have a chance to find many boats with interesting designs with could be traded close to you allowing you to save money on delivery charges.

For the realization of the internal frame I’m going to use a 3d printer in order to optimize mass distribution and secure electronic components.

I just wanted to thank @Durvir for letting me know that there are several “sailbot” competitions all over the world.

I found a very interesting source of information (regarding both hardware and software), to witch I’m going to take a deep look :)

Here it is:

http://www.microtransat.org/links.php