| 摘要 |
An oar capable of capable of moving forward a boat at high speeds by preventing a propulsion force from being lowered by the resistance of water produced in the oar return operation, comprising an oar leg (2) having a flat surface part (12) vertical to an oar arm (1), wherein the oar arm (1) is fitted to the upper end part of the oar leg from the diagonal lower side thereof. Namely, the oar arm (1) is fixed to the oar leg (2) in the state of "receiving" the oar leg (2). Also, an oar grip (3) is not installed on the upper surface side of the oar arm (1) but on the lower surface side thereof.
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