Class 2 (2nd Engineer) MEKG 📅 Apr 2023

Exam Question

(a) Describe with the aid of sketches where necessary a vane type steering gear showing how to weight of the rudder and stock are carried and the arrangement that allow for wear down

(b) State how the vanes described in (a) are secured and the method of sealing the edges

Reference Answer

### (a) Vane Type Steering Gear: Construction, Weight Support, and Wear Down
A rotary vane steering gear generates torque directly on the rudder stock by admitting high-pressure hydraulic oil into sealed chambers. The main components are a fixed housing (stator) and a rotor keyed to the tapered rudder stock.
**Construction and Operation:**
* **Stator:** A cylindrical housing, securely bolted to the ship's structure, forming a rigid support. The inner bore of the stator has a number of fixed vanes (typically three) projecting radially inwards.

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