A hydro-kinetic water turbine 1 for tidal rivers and shallow tidal areas houses a cross flow turbine 19 to drive a generator. The turbine is ducted 3 and may use two symmetrical converging ducts when used for reversing tidal flow. The assembly 1 is provided with non-moving disrupters (31 figures 3-4) that cause the average flow through the turbine 19 to be constant above a certain free stream flow rate. The ducts are radiused at entry and discharge and an external fairing is provided to optimise the acceleration achieved. Various means of installation are presented depending on the site conditions, including the use of floats where necessary. The turbine-generator module may be easily removable as a single subÂassembly. A mesh basket may be provided at the openings to prevent large fish and debris entering the turbine 19.
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