The Vice President of the United States is the ex officio President of the Senate, with authority to preside over the Senate's sessions, although he can vote only to break a tie. For decades the task of presiding over Senate sessions was one of the vice president's principal duties.
However, because they ride atop the water, rather than cutting through it as other hulls do, flat-bottom boats are usually limited in the size of their motors. The flat surface may also give a spine-jarring ride in anything less than calm weather.
Marine Hull Types. Boats perform in the water based on the physical shape of the hull, and how it sits in the water. The two general types of hulls are displacement and planing. Other types of hull construction combine features of the displacement and planing hulls and are called semi-displacement or semi-planing. Displacement hulls push through the water as they have no hydrodynamic lift, or the boat does not rise out of the water as speed increases. The maximum speed of these hulls is typically between 1 and 1.5 times the square root of the boat length based on hull design.