"m = 500 kg;"
The boat has a weight P due to the force of gravity and to lift it, you must exert a force greater than the weight of the boat.
Weight is calculated by the formula:
"\u0420 = mg; H = 500kg\\sdot 9.8 H\/kg = 4900H;"
The force required to lift the boat must be greater than 4900H;
Answer: Raising the boat requires a force greater than 4900 H.