High Performance hdpe spade rudder for your Aquarius 23. Offers improved windward ability, enhanced control, quicker tacks, better heaving-to and easier docking. The low-drag, high lift airfoil profile will improve speed on and off the wind. 1 inch solid stainless steel rudder post and welded stainless internal webbing make this the best performing, strongest Aquarius 23 rudder available.