it is called buoyancy - search Archimedes principal - any object wholly or partially immersed in a fluid is bouyed up by a force equal to the weight of the fluid displaced by the object. don't you hate it when you get an answer and it still doesn't make sense! it is actually pretty involved and changes based on type of fluid and density of that fluid and the shape of the object -- maybe a local dive shop could give more detail if the above search doesn't help.
by making a boat and that way a boat can float anytime in water
anything you want that can float. You can be creative.
Put it on a boat?
The key to make a boat float is that the boat should weigh less (or have less mass) than the water it displaces.
I can make a iron nail float. Simply melt some lead and the iron will float on top of the lead. Your question seems to be with regard to how do Boats float and the answer is Bouyancy. The Boat displaces a volume of water and if the weight of the displaced water is less than the weight of the boat, the boat will float.
round
fowlled it into a sail boat.
make it into shape of a boat
gravity bouyancy
with proper engineering, anything is possible.
Yes the boat will float on liquid soap
because the boat is made out of stuff that can float