After the hull shell is finished it need o get closed.
Deck stringers are glued into place. One of the two hatches for the cargo compartments is visible on the left. The hull will get 3 m³ of cargo volume in the first step. If more is needed it could be extended easily later by adding some bow hatches. Right now, the main hull will get 3 collision departments with a length of 2,5 m on each side.