WordNet
- an arch that is formed with more than one concentric row of voussoirs
PrepTutorEJDIC
- =oarlock
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/07/09 18:50:34」(JST)
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A rowlock on a rowing boat
A rowlock used for the sport of rowing
A rowlock UK // or oarlock (US) is a brace that attaches an oar to a boat. When a boat is rowed, the rowlock acts as a fulcrum, and, in doing so, the propulsive force that the rower exerts on the water with the oar is transferred to the boat by the thrust force exerted on the rowlock.
On ordinary rowing craft, the rowlocks are attached to the gunwales. In the sport of rowing, the rowlocks are attached to outriggers (often just called "riggers"), which project from the boat and provide greater leverage. In sport rowing, the rowlocks are normally U-shaped and attached to a vertical pin which allows the rowlock to pivot around the pin during the rowing stroke. They additionally have a locking mechanism across the top of the "U" to prevent the oar from unintentionally popping out of the rowlock.
Originally rowlocks were two wooden posts or thole pins that the shaft of the oar nestled between.
Trivia[edit]
The Norwegian municipalities of Fosnes, Radøy and Tjøme have rowlocks in their coats-of-arms.
Japanese Journal
- 高山 久明,矢田 殖朗,山口 恭弘
- 日本航海学会論文集 (99), 189-196, 1998-09-25
- … Consequently, effective horsepower of each university became from 1.1 to 1.7ps. We also quantitatively estimated the indicated horsepower of a crew, which was about from 0.29 to 0.43ps according to the position of grip, rowlock as well as blade of an oar. …
- NAID 110006403535
Related Links
- ROWLOCK. 通常取得されるページ ロックまたはテーブル ロックの代わりに、行ロックを 取得することを指定します。 ... 行レベルのロックを取得するロック ヒント ROWLOCK、 UPDLOCK、および XLOCK では、実際のデータ行ではなくインデックス キーに対して ...
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