Class 4 (4th Engineer) SC&S 📅 Sep 2022

Exam Question

Sketch a semi balanced rudder of your choice showing:

(a) A detail of the hinges or pintels about which rudder turns. (4)

(b) Details of the rudder carrier ring, which supports the weight of the rudderstock and rudder (4)

(d) What acts as 'rudder stops'? What is their purpose and at what angle from mid position would you expect the rudder stops to be set (4)

Reference Answer

### (a) Semi-Balanced Rudder & Hinge/Pintle Arrangement
A semi-balanced rudder is designed such that a portion of the blade area (typically 20-30%) is located forward of the turning axis (rudderstock centerline). This design significantly reduces the torque required to turn the rudder.
**Hinges or Pintles:** The rudder is supported and pivots on pintles (pins) which fit into gudgeons (sockets).
* **Construction:**

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