What is a force helps a ship float?

Buoyant force = Density of the

water * g * Volume of displaced water

For the ship to float, the buoyant

force must be equal to the weight of the ship.

Density of the water * g * Volume

of displaced water = m * g

Density of the water * Volume of

displaced water = m

When you multiply the density of

water by the volume of displaced water, you get the mass of the

ship.