There are two main types of races. These are canoe (C1, C2, C4) and kayak (K1, K2, K4). The number tells how many people are on the boat. In a kayak, a person sits. In a canoe, a person kneels on one knee. A kayak has a rudder. It is used to steer the boat. A canoeist (person who uses a canoe) uses the paddle to move the boat. This is done by moving the paddle from the bow to the stern (front to back). After each race, the boats are looked at to make certain they are legal. If a boat does not have enough weight, the racer is disqualified and cannot win the race.