What would be the maximum tide amount if the Earth was covered only by deep ocean?

The maximum tide amount would be significantly influenced by the characteristics of oceanic tides, primarily determined by the gravitational pull of the moon and the sun, compounded by the Earth's rotation. In a scenario where the Earth is covered entirely by deep ocean, it is important to consider the relationship between tidal ranges and the shape and depth of the ocean basins.

With deep oceans, the tides can be expected to develop less dramatically than in coastal regions where the shoreline and ocean floor topography influence tide heights. Deep ocean conditions, characterized by a relatively uniform and extensive water body, lead to lower tidal ranges. The forces acting on this deep water would result in less amplification of tidal waves compared to those experienced in shallower areas where the bottom topography significantly impacts tidal dynamics.

In this case, the maximum tide amount would be around 0.5 meters. This reflects the inherent limitations on tidal heights in deep water as compared to the potential heights near coastlines or in shallower, enclosed bodies of water where tidal effects are more pronounced. Thus, given the uniformity of the deep ocean, smaller tidal ranges are the norm.