Exam Question

### (a) Sketch the arrangement of rudder stock, bearings, glands and method of suspension of a pintleless rudder, labeling the components parts.
A pintleless rudder design, often a spade rudder or a semi-spade rudder, is characterised by the absence of traditional pintles and gudgeons for its support. Instead, its entire weight and all reaction forces are primarily supported by bearings located within the ship's hull and rudder trunk, with the steering gear transmitting the torque directly to the rudder stock.
#### Components and Arrangement:
* **Rudder Stock**: This is the main vertical shaft that connects the rudder blade to the steering gear. It is a critical component, transmitting the steering gear's torque to the rudder blade and absorbing the bending and shear stresses imposed by hydrodynamic forces. The stock is typically forged steel, tapered at its lower end for a secure connection to the rudder blade, and designed with a keyway or hydraulic fit for connection to the tiller/quadrant. For pintleless rudders, the rudder stock bears the entire vertical load of the rudder. Its diameter is calculated to withstand maximum design loads, including dynamic forces during maneuvering in rough seas.