That's the goal, yes, but IMO, this design is cheating to beat it. It stretches the idea of what is a boat (for example: can it be wider than it is long?), and of where the boat ends and the stuff loaded onto it starts.

You can also be clever by designing a 'boat' that is nothing more than a mast with a large counterweight standing vertically in the water, attach your permanently inflated 20 meter long 'life raft' to it, and live out of that life raft during the trip. Such a 'boat' could easily be less than a foot long.