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 and ships can be made of just about anything as long as the vessel has an average density less than water and does not immediately dissolve (e.g. salt, paper pulp). Moâ¦st modern ships are made of steel or aluminum. Boats are made of metal, wood, plastic, or fiberglass.