He walked at the other's heels with a swing to his shoulders, and his legs spread unwittingly, as if the level floors were tilting up and sinking down to the heave and lunge of the sea.

Heave compensation is one of the key techniques which need to be solved in the deep sea mine technique.

It provides a new method to estimate phase difference for test of characteristic parameters of fluid and measurement of a ship heave in deep-sea mining.