Oar (sport rowing)

In rowing, oars are used to propel the boat. Oars differ from paddles in that they use a fixed fulcrum to transfer power from the handle to the blade, rather than using the athlete's shoulders or hands as the pivot-point as in canoeing and kayaking. Typical Sculling oars are around 284cm - 290cm in length, and rowing oars 370cm - 376cm long. The shaft of the oar ends with one flat end about 50cm long and 25cm wide, called the blade. The part of the oar the oarsman holds while rowing is called the . While rowing, the oars are supported by metal frames attached to the side of the boat called riggers.
See more at Wikipedia.org...