| A | B |
|---|
| 111.1 Describe the function and operation of the Steering system | Utilizes electric signals that open the pumps that will use hydraulic fluid sent to the rams to turn the ship |
| 111.2a State the function of the following major components: Steering pumps | provide hydraulic fluid for hydraulic power for either of two pumping units for rams to move rudder |
| 111.2b State the function of the following major components: Trick wheel | mounted on follow up units for manual control of steering system in event of loss of control at the pilot house |
| 111.2c State the function of the following major components: Differential control box | resolves difference between signals from rudder and port/stbd trick wheels and pilot house helm, sends output signals to operate pumps |
| 111.2d State the function of the following major components: Ram assembly | Uses hydraulic power from pumps to position rudder at desired angle |
| 111.2e State the function of the following major components: Emergency steering pump (hand/electric) | operated with twin crank handles. Positions rudder in the event of loss of electrical power |
| 111.2f State the function of the following major components: Rack and pinion follow up assembly | provides feedback signal to differential control box which will differentiate between rudder positions and helm angle and destroke pump |
| 111.3 State the different modes of steering control: Remote steering | Remote steering from the pilothouse |
| 111.3 State the different modes of steering control: Local steering | Local steering through trick wheel in aft steering. |
| 111.3 State the different modes of steering control: Emergency steering | uses hand pumps on loss of electrical power; 13 turns = 1 degree |
| 111.3 State the different modes of steering control: Jacking nuts | are used in the event of a major hydraulic failure and is the absolute last resort |
