Sculling - Single-oar Sculling

Single-oar Sculling

Single-oar sculling is the process of propelling a watercraft by moving a single, stern-mounted oar from side to side while changing the angle of the blade so as to generate forward thrust on both strokes. The technique is very old and its origin uncertain, though it was probably discovered independently several times by different peoples. It is known to have been used in ancient China, and on the Great Lakes of North America by pre-Columbian Americans.

In single-oar sculling, the oar pivots on the boat's stern, and the inboard end is pushed to one side with the blade turned so that it generates forward thrust; it is then twisted so that when pulled back on the return stroke, the blade also produces forward thrust. Backward thrust can also be generated by twisting the oar in the other direction and rowing. Steering, as in moving coxless sculling shells in crew, is accomplished by directing the thrust. The oar normally pivots in a simple notch cut into—or rowlock mounted on— the stern of the boat, and the sculler must angle the blade, by twisting the inboard end of the oar, to generate the thrust that not only pushes the boat forward but also holds the oar in its pivot. Specifically, the operation of the single sculling (oar) is unique as turning the blade of the oar in figure 8 motions operates them. It is not hoisted in and out of the water like any other traditional oars. The objective is to minimize the movement of the operator’s hands, and the side-to-side movement of the boat, so the boat moves through the water slowly and steadily.

This minimal rotation keeps the water moving over the top of the blade and results in forces that transfer to the multi directional row-lock, or pivoting mount, on the side of the hull thus pushing the boat forward. Steering the boat is just a matter of rotating the oar to produce more thrust on a push or pull of the oar, depending upon which way the operator wants to go.