A <a href="https://en.wikipedia.org/wiki/skeg" class="extiw" title="en:skeg">skeg</a>-mounted <a href="https://en.wikipedia.org/wiki/rudder" class="extiw" title="en:rudder">rudder</a> on a boat
Flickr user "<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/27443140@N03/">wrench2.0</a>"
CC BY 2.0
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