| 摘要 |
A rudder system is provided on a vessel with an open propeller or no propeller, comprising at least three rudders coupled to turn in unison and operating as a cascade. The rudders are mounted on stocks journalled in bearings carried by a box above the rudder which box is fitted into a recess in the hull. A master tiller is provided on the center stock, and the three stocks are coupled to one another within the box.
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