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.
Boats are commonly made of wood, aluminum, steel, fiberglass or any combination of these materials. Wood is the traditional material used for boat building and is considered aesthetically pleasing. Steel is commonly used on larger vessels, and aluminum is usually found on canoes, skiffs, pleasure craft and fishing power boats that are stored out of the water.