whipstaff

Etymology
From.

Noun

 * 1)  A bar, going through the poopdeck, attached orthogonally to the tiller for steering a ship.

Translations

 * Dutch: kolderstok
 * Finnish: peräsinvipu
 * French: ,
 * German: Ruderstock
 * Portuguese:
 * Russian: колдершто́к
 * Spanish:
 * Swedish: kullerstock