Although some of my larger designs, like Gypsy and Romany, can easily be built in sections, the large bridgedeck cabin boats can cause problems if building away from the water. It is easiest to use foam sandwich rather than wood if building a boat in sections. Rather than make longitudinal joints (which always complicates joining beams) I now think it might be easiest to make transverse joints.

In other words, build the complete boat and then cut it into three sections ACROSS the boat. Eg one cut between the aft cabin bulkhead and saloon seats, and another in the anchor lockers. These joints will be easy to remake and, just as important, to hide and will not cause any real structural problems. The resulting sections should then be able to be transported legally (with a wide load escort of course).