NOVELTY - The electricity generator has a large vessel attached to a swinging mooring firmly anchored to the seabed. A tidal stream causes a continuous flow of water over a turbine or turbines (1) of the vessel to generate electricity as the tide ebbs and flows. The vessel is a twin hulled ship in which hulls deck and keels are shaped to increase water flow through turbine or turbines to maximize their efficiency. Wind turbines (5) are mounted on deck to supplement energy input and continue power generation as the tide turns, and keep generating electricity when wind drops and as tide turns.    USE - Offshore combined tide and wind electricity generator for producing electricity harnessing energy of tidal flow with energy of wind power.    ADVANTAGE - Uses a turbine which has a vessel aft shaped to allow the water to flow over the turbine without any cavitation or exit the vessel in a smooth flow. Ensures that the power generated can be transferred to the appropriate transformers housed in a weather tight hold immediately above the turbine along with any other necessary equipment, which can be accessed via a deckhouse to allow maintenance. Ensures that the power generated can be introduced to the national grid via cables to the mooring buoy, and along the seabed to a shore based substation. Uses a ship that have a low profile with no bridge or superstructure to reduce wind resistance, only the necessary components of accessing the onboard machinery and the windmills mounted to the deck. Ensures that the ships, once towed to and moored in the appropriate sites, do not need to be manned but can be boarded from time to time for inspection and maintenance. Uses vessels that are large enough to house turbines and generators similar to those used in hydroelectric dams, and stable enough to allow the wind turbines to operate in strong winds. Ensures that the vessels are seaworthy enough to withstand gales and storms, but are not considered for use in waters where hurricanes or typhoons occur. Ensures that the vessels can be sited far enough off shore to avoid regulation and prohibitions in the building wind turbines on land.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) Large vessel; and    (2) Twin hulled ship.    DESCRIPTION OF DRAWING(S) - The drawings show the sectional views illustrating how the interiors might be shaped to increase water pressure, and the plan view illustrating the direction of the tidal stream.    Turbine or turbines (1)    Machinery housed on board (2)    Water entry (4)    Wind turbines (5)