Wave powered ships

But surely adding an extra layer to the side of the ship will add to the drag and cause more energy loss than is gained.

There would also be also be energy gains from water captured that the ship would have deflected to offset to offset any drag losses.

I think what you are trying to invent here is essentially a perpetual motion machine under another name. If you wish to work on it further I can only wish you the best of luck and hope you can prove me wrong.

what about travelling in the opposite direction ?

As far as I know, almost all wave action derives from the wind. In that case, why not go direct and use the wind, ie go back to sailing ships.

Hello, I think that your idea is good, but I'm not sure if adding the feature on the side would be appropriate, because it'll difficult the movement of the ship and the hull should be as smooth as possible. Maybe would be worthwhile adding some internal pendulums or other mechanical devices which can transform the rolling movement energy into electricity, perhaps inside the ballast and water supply tanks. 

What do you think? 

Regards 

Waves are a more concentrated form of energy than wind energy and there are waves when there is no wind.

Utilising the energy of waves should make the ship more rather than less stable. At the moment the energy of waves  lifts the ship up or down, moves it from side to side or pushes it away. By converting this energy into pressurised water it can be used to drive a turbine or released behind to push the ship forward. 

Nuclear powered ships is a better solution.  

Some small boats are powered by foils that generate forces as the boat rolls and pitches. 

I'm locking this topic as there is a very similar one. Please add your comments there instead.