While I know that the physics for actual hydroplanes will likely not ever be implemented, I wonder what we can do to come up with a viable substitute. This challenge comes from an idea I had about Laythe. I decided to build an amphibious craft for Laythe. The idea was that even if I missed the land on landing, I could just jet through the water then ease onto land. I put 1 FL-t800 on its side, mounted a couple of "Modular Girder Segments" on it at angles pointing downward, then mounted a couple more FL-T800 fuel tanks as pontoons. I mounted wheels to the outside of the pontoons. I then added fuel lines from the pontoons to the center fuel tank and added an engine to the top tank. I also added a couple of downward facing side mounted engines for getting back to orbit. The idea was there would be 2 fuel tank pontoons and a single jet, above the water line, to push the whole craft through the water. I tested it on Kerbin, and, well, it was a complete failure. Because the thrust was above the center of mass, it just wanted to nose dive in the water(if the wheels even survived entering the water at all). It seems to me the solution would be to put the rear facing jet below the water line. I wonder if real physics would even allow that and how does the game handle it and how close is the game to reality? Anyway, on to the challenge! Challenge: Easy: 1. Build an amphibious craft that can land on Lathe (water or land). 2. The craft must navigate from water to land and back to water or, from land to water and back to land. Moderate: Craft must contain all science equipment,a transmitter, and hold at least 1 kerbonaut. Hard: above requirements + safely make it back to orbit to dock with mother ship