Rowing (sport)
Oar

Oars, sometimes referred to as blades, are used to propel the boat. They are long (sculling: 250–300 cm; sweep oar: 340–360 cm) poles with one flat end about 50 cm long and 25 cm wide, called the spoon. Classic blades were made out of wood, but modern blades are made from more expensive and durable synthetic material, the most common being carbon fiber.

An 'oar' is often referred to as a blade in the case of sweep oar rowing and as a scull in the case of sculling. A sculling oar is shorter and has a smaller spoon area than the equivalent sweep oar. The combined spoon area of a pair of sculls is however greater than that of a single sweep oar, so the oarsman when sculling is working against more water than when rowing sweep-oared. They are able to do this because the body action in sculling is more anatomically efficient (due to the symmetry).

The spoon of oars is normally painted with the colours of the club to which they belong. This greatly simplifies identification of boats at a distance. As many sports teams have logos printed on their jerseys, rowing clubs have specifically painted blades that each team is associated with.
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