Class 4 (4th Engineer) SC&S 📅 Mar 2026

Exam Question

(a) Sketch the arrangement of rudder stock, bearings, glands and method of suspension of a pintleless rudder, labeling the components parts. (8)

(b) State how the bearing wear down is measured and what prevents the rudder from jumping? (8)

Reference Answer

### Part (a): Arrangement of a Pintleless Rudder
A pintleless rudder, also known as a spade or semi-spade rudder, is supported entirely by the rudder stock within the hull structure. It has no lower support from a pintle in a stern frame, which improves hydrodynamic efficiency. The entire weight of the rudder is supported by a rudder carrier bearing located within the steering gear room.
**Key Components of the Arrangement:**
1. **Rudder Blade:** The main hydrodynamic surface that steers the vessel.

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