A.
At a depth of 1200 feet the effects of a violent surface storm are frightful.
B.
A submarine commander navigating his vessel at a depth of 700 feet will not be affected by a raging surface storm.
C.
A typhoon 500 miles out at sea can stir up the ocean floor.
D.
If high waves can strike the shore with a horizontal force of 75 million pounds, the vertical force of such waves can have an even greater effect upon the ocean floor.