NOVELTY - The generator (101) has a shaft (105) that is coupled to floating structure and located parallel to the surface of water. Several high aspect ratio rotor blades (109) are extended radially from the shaft, such that portion of the blade extends under the surface of water. The rotor blades and shaft are rotated, due to the movement of water under the generator.    USE - Surface piercing tidal generator.    ADVANTAGE - The blades can be cleaned easily, without removed from the tidal generator, since the blades are located above the water line. The maintenance of the generator can be performed easily without requiring much cost and complexity, by reducing the need for coating the anti-fouling paints or anti-fouling surface treatment on the blades. Stability of the generator can be improved, since the stationary structures are located at the ends of the tube and keels are extended from bottom of the structure. Since the shaft can be angled relative to the flow of water, the reduction in water velocity and turbulence of water flowing to the downstream rotor can be prevented. The rotor blades can be set to the expected water velocity, in the areas where the water velocity is constant. Since the pitch of the rotor blades is fixed and rotational speed of the rotors is varied with respect to variation in the current speed, the angle of attack of blades can be maintained constant over a wide range of current speeds without any change in the rotor blade geometry. Since the angle of attack and the lift forces on the blade are reduced, damage to the tidal generator can be prevented. The design of the generator can be simplified, since the drive shaft, bearing and generator are located above the water line and the lower rotor blades are floating structure are submerged and usage of complicated seals or underwater mechanism that can cause system failure is prevented. The tidal generator is easily moved to the installation side and secured to the fixed object such as mooring coupled to the sea floor or a portion of land without the need for mounting the entire tidal generator underwater using specialized installation equipment such as cranes. Hence, the tidal generator is simple and safe to ensure more accessibility of the tidal power.    DESCRIPTION OF DRAWING(S) - The drawing shows the upper perspective view of the surface piercing tidal generator.    Surface piercing tidal generator (101)    Pontoons (103)    Shaft (105)    Blades (109)    Front end of floating structure (115)