Rowing (sport)
Rowing is the sport of racing boats using oars. It differs from paddling sports because the oars are attached to the boat using oarlocks. Paddles are not connected to the boat. Rowing is divided into sculling and sweep rowing. In sculling, each rower has two oars—one in each hand. In sweep rowing each rower holds one oar with both hands. There are several boat classes for competitions. Single sculls are just one person in a small boat.  Shells with eight rowers and a coxswain are called eights. There are many types of racing, but most high level racing is on calm water courses 2 kilometres (1.2 mi) long with several lanes marked using buoys.