1. WAVE AND TIDAL ENERGY Clean Renewable Power For Islands and
Coastal Communities Around The World
Inventor: John C. Hanna U.S. Patent 8,358,026

2. NEW TECHNOLOGY Simple - Only three moving parts
Versatile – Wave OR Tidal Energy
Adaptive – Multiple configurations
Low Cost – Off-The-Shelf parts
Robust - Built for decades of use
Accessible – Easy to maintain
Scalable – Single or multiple array
Consistent – Waves and tides
Patented Wave & Tidal Drive Train

3. Direct Drive, 1 to 1 Ratio, No Transmission
TIDAL TURBINE
(1) Turbine airfoils
(2) Hub
(3) One-way freewheel bearings
(4) Common drive shaft
(5) Housing for generator
(6) Alternating tidal flows
(7) Rotation of one-way shaft
(8) Optional shroud
Direct Drive, 1 to 1 Ratio, No Transmission

4. Wave Turbine – Bent Duct Version
Uses the same patented drive line
as the tidal turbine
Three moving parts – Rotors & shaft
Bent Duct version (shown) to save
space
Inline version (next page) can be
vertical or horizontal
Shore or Buoy Installation
Drives Two Generators: can use
conventional or annular ring type

5. Wave Turbine – Inline Duct Version

6. Operating Principle – Wave or Tidal Versions
The dual rotor blades are mirror Flow direction alternates back and forth. The
images of each other. The rotor upstream rotor always turns the drive shaft.
blades’ leading edges point out. The downstream rotor will always freewheel.
Regardless of flow direction, the shaft will always spin in one direction!

7. TIDAL INSTALLATION METHODS
Stand alone on seabed
Seabed Array
Fixed Onshore Array
Floating from Surface

8. WAVE INSTALLATION METHODS
Nearshore Buoy
Onshore Jetties or
Breakwaters
Offshore Oil & Wind
Platforms: On Legs or
Suspended Below

9. CONCLUSION
The world’s oceans can provide 80,000 TWh/year of power; a third of the world's annual electricity consumption. Ocean current, tidal and wave energy is more dependable than wind and solar.
The wave and tidal converter described here offers a simple and practical design to make a meaningful contribution towards global sustainability.
The patented drive train is unique. It’s the reason the turbine works so efficiently. There is nothing like it in the wave or tidal energy sector.
The Hanna technology is proven by high-level academic research studies.
The groundwork is complete for a qualified developer to acquire the technology for commercialization.