Rudder for aquatic craft and floating apparatus

A rudder assembly for aquatic craft comprising:

• a main rudder member defining a fore-and-aft center line and mounted on said craft for pivotal movement to opposite sides of said center line;
• a guidehead defining the leading edge of said rotor assembly affixed forwardly of said main rudder member;
• a fin member mounted at the trailing edge of said main rudder member for pivotal movement relative thereto to opposite sides of said main rudder member;
• a first rotor interposed between said main rudder member and said guidehead;
• a second rotor having a diameter smaller than the diameter of said first rotor interposed between said main rudder member and said fin member;
• said first and said second rotors both mounted for rotation in either one of two opposite directions of rotation about axes lying generally on said center line and extending perpendicularly relative thereto;
• said first and said second rotors having outer surface areas arranged to be exposed on opposite sides of said rudder assembly to fluid flow past said rudder assembly;
• the direction of rotation of said first rotor being variable in accordance with the pivotal position of said main rudder member relative to said center line and the direction of rotation of said second rotor being variable in accordance with the pivotal position of said fin member relative to said main rudder member.