Are cylinder ships a dead-end invention?

[rwatson]

The last three contributions dont seem to have come across my previous quote -
"that maximum heeling resistance is reached at winds of 25mph, and in fact the moving rotors actually claw their way back upright towards the wind. "

This means in effect that the righting effort doesnt increase geometrically with wind velocity like sails do. After 25 mph, there is no increase in the pressure against the rotors.

[Omeron]

It is not the technology available which will bring them back.It will be the price of oil to do so. At over 112$ a barrel today, it is an interesting proposition, At over 150$ it is viable, At over 200$ you will probably have to.