Abstract: An inboard rudder 6 harbors within a bearing assembly 12 which passes vertically from a hull 10 of a boat 2 to a cockpit floor 8 of the boat 2 such that the inboard rudder 6 can be rotated around a vertical (z) axis 7 by a tiller 14 and raised or lowered by pulling or pushing on the top of rudder 6. Rudder 6 can be rotated about an axis (y) parallel to the width of the boat 2, in the fore and aft direction, by pulling or pushing on tiller 14 thereby altering a sweep angle 28 of the rudder (FIG. 3). Rudder 6 can be rotated about an axis (x) perpendicular to the length of the boat 2.