Explanation:

A boat will submerge (meaning it becomes completely immersed in water) when it displaces a volume of water equal to its own total volume. At this point, if the boat's total weight is greater than the weight of the water it has displaced (i.e., its density is greater than water), it will sink. If its weight is equal to the displaced water's weight, it will float fully submerged. An object floats when it displaces water equal to its own weight.