The water density is higher than the boat's therefore it floats on the water.
A wooden boat floats in water due to its buoyancy and the displacement of water created by the boat's weight.
Wood floats in water.
If it floats on the water.
The same way anything floats, by displacing an amount of water that weighs as much as it does. Airplanes that are meant to float on water typically either have boat-like hulls or floats whose purpose is to displace enough water to allow the airplane to float.
When the boat is first lowered gently onto the surface of the water, the surface level rises slightly, regardless of the boat's size, shape, or weight, or what it has on board. The boat floats because it has displaced an amount of water that weighs exactly as much as the boat does. That means it has pushed some water out of some volume that the boat now occupies. The water it pushed aside has to go somewhere, and the surface level in the pool must rise.
Simply put, the displacement of any boat is the amount of water the hull displaces when it floats. The weight of the water being displaced will be equal to the weight of the boat...assuming it's still floating, that is.
A boat floats by keeping water outside, regardless of any material
raft, boat
A boat made of steel floats because of the principle of buoyancy. When the boat displaces water that has a weight equal to or greater than the weight of the boat, it floats. The steel hull is designed to displace enough water to generate an upward force greater than the weight of the boat, keeping it afloat.
When a boat floats on water, it is experiencing buoyancy. The upward force exerted by the water on the boat is equal to the weight of the water displaced by the boat, allowing it to stay afloat.
A metal boat would float on water and be a conductor of electricity.