n one column of the platform of FIG. 1.FIGS. 4A and 4B are a side view and a top view, respectively, of a second embodiment of the heave damper of the present invention.FIGS. 5A and 5B are a side view and a top view, respectively, of a third embodiment of the heave damper of the present invention.FIGS. 6A and 6B are a side view and a top view, respectively, of a fourth embodiment of the heave damp