Rise
The density of silt is greater than that of water, and the buoyant force on the ship (equal to its volume times the density of the mud) is greater than the force of buoyancy in water (equal to its volume multiplied by the density of water)
Digging If the mud is empty, fill it with an equal volume of water and compensate for a certain weight without volume. These weights will push the ship down and. the water surface will increase.