A marine engineer tests the integrity of a high-tension steel mooring cable running horizontally from the bow to the stern of a docked vessel, as shown in Figure 1.
Figure 1
A hydraulic actuator at the bow displaces the end of the cable horizontally from side to side (port-to-starboard), initiating a continuous wave that travels along the length of the cable towards the stern.
Explain why the wave propagating along the mooring cable is classified as a transverse wave.