The author remixed this model.
After printing the amazing original model and letting my todler stress test the design a bit, it became clear that water collected on the top lip and tipped the boat sidways too much.
These issues combined with the portruding bolts I had to use to balance the boat whan loaded with the four pieces made it hard to put it on a flat place to dry and wait for the next bath time.
I went ahead and added larger draining holes below the four pieces as well as side holes to let the water drip instead of collecting on the top lip. The bottom was iproved as well by adding a large perforated basket to make it easier to balance the wohole thing and have it drain when placed on a flat surface.