Motor boat rudder blade

Compensated rudders adjusted to the dimensions of the propeller clearence of each boat, with rudder blade shaped or flat, with three different rudder hole systems for installation in hulls of wood, steel, fiberglass or aluminium. Lubrication system of the rudder hole by means of grease with seal rings in the outside of the hull and in the top of the rudder hole inside the hull. The gooseneck is fitted to the blade by means of bolts making the blade removal easier, without