1. © www.tidalflowenergy.com Uni-flow river unit

2. © www.tidalflowenergy.com a uni-flow unit has only one downstream by-pass channel upstream downstream uni-flow river unit © clf anderson diagrammatic only not to scale narrowing entrance channel wide exit channel

3. © www.tidalflowenergy.com upstream uni-flow river unit © clf anderson diagrammatic only not to scale clockwise rotor on this unit anti-clockwise rotor on this unit a pair of mirror-imaged rotors may share a single by-pass vent passage to the downstream level

4. © www.tidalflowenergy.com upstream uni-flow river unit © clf anderson diagrammatic only not to scale clockwise rotor on this unit anti-clockwise rotor on this unit a venturi passage may be used to ensure a low water level at the outlet of the positive displacement vent

5. © www.tidalflowenergy.com a “bulbous bow” ship profile may be used to ensure a low water level at the outlet of the positive displacement vent upstream downstream © clf anderson diagrammatic only not to scale narrowing entrance channel wide exit channel river bed uni-flow river unit