This is a remix of "Odile The Swan". I thought the swan model was great but wanted to actually make it float on water. I simply attached a boat hull to the bottom using Tinkercad and adjusted the shape of the hull until I achieved the right buoyancy. I think it turned out great but I welcome any remixes that can optimize the hull shape even farther!
The photos posted are of a model scaled down to 50% of the original size. However, buoyancy will be maintained with proportional scaling.
You will need to add a modifier layer to the print object so that you can differentiate the infill settings of the boat and the swan body. We found that it was best to make the boat portion as dense as possible and the swan portion as light as possible. We ended up with a 60:5 ratio but YMMV.