Sculling is the use of oars to propel a boat by moving them through the water on both sides of the craft, or moving one oar over the stern. A long, narrow boat with sliding seats, rigged with two oars per rower may be referred to as a scull, its oars may be referred to as sculls and a person rowing it referred to as sculler. Sculling is distinguished from sweep rowing, whereby each boat crew member employs an oar, complemented by another crew member on the opposite side with an oar, usually with each pulling it with two hands and from stern sculling, which uses an oar to propel a vessel with side-to-side movements from the stern. Overview Sculling is a form of rowing in which a boat is propelled by one or more rowers, each of whom operates two oars, one held in the fingers and upper palm of each hand. This contrasts with the other common method of rowing, sweep rowing, in which each rower may use both hands to operate a single oar on either the port or starboard side of the boat. Sculling is generally considered the more technically complex of the two disciplines. Sculling can either be competitive or recreational, but the watercraft used will vary between the two as the racing shells of competitive rowing are built for speed rather than stability. Racing shells are also far more expensive and fragile than what is suitable for the recreational rower; a typical racing shell sells for thousands of dollars while recreational sculling boats may cost significantly less. In crew Sculling, one of the two major divisions of crew (or competitive rowing), is composed of races between small, sculled boats crewed by various numbers of rowers. Generally, one, two, or four athletes row these shells. These shells are classified according to the number of rowers that they can hold: singles have one seat, doubles have two, and quads have four. In keeping with this pattern, quads rowed by three people (due, for instance, to a temporary shortage of rowers) are often colloquially referred to as "triples". The boat manufacturer 'Stampflï' has created a triple with only three seats (rather than using a quad occupied by three people). A rare sculling shell is the octuple, rowed by an eight-man crew, which is sometimes used by large rowing programs to teach novice rowers how to scull in