The ocean has great potential for generating usable energy if it can be harnessed efficiently. For example, ocean waves, high and low ocean tides, and/or temperature differences in the water are a several ways that the ocean can be used to generate useable energy. Ocean waves, in particular, can have a significant amount of kinetic energy and this energy can be used to power various systems. Although there are many systems for generating energy from the movement of ocean water, there is a continued need for improvements in transferring energy from a power generation system to another location, such as a power grid on shore. Some such devices utilize a buoyant tube to transfer such energy.