| A | B |
|---|
| 110.1a State the purpose of the following components: Main thrust bearing | eliminates counter thrust on main engine - Kingsbury Thrust Bearings |
| 110.1b State the purpose of the following components: Main propulsion turbines | 2 HPs & 2 LPs. HP receives 600 psi to turn turbine for ahead motion, LP for astern motion |
| 110.1c State the purpose of the following components: Main reduction gear | reduces torque both shafts to one shaft to turn propeller |
| 110.1d State the purpose of the following components: Shaft seals/bulkhead seals/inflatable seals | Inflatable seal is last seal before propeller, Shaft seal is flange between shaft pieces, bulkhead seal is between spaces |
| 110.1e State the purpose of the following components: Strut bearing | holds shaft, last bearing before propeller |
| 110.1f State the purpose of the following components: Jacking gear | prevents warping of shaft, 1 revolution takes 7 minutes, jacks over a week cold iron, modified steaming & u/w all the time |
| 110.2a State the purpose and location of the following: Main condenser | changes steam to condensate |
| 110.2b State the purpose and location of the following: Main air ejectors/air ejector condenser | condenser - takes out air & non-condensable gases |
| 110.2c State the purpose and location of the following: Main condensate pump | pumps condensate to air ejector condenser |
| 110.2d State the purpose and location of the following: Main circulating pump | at 5 knots and below circulates seawater |
| 110.3a Describe the function of the following valves: Guarding | valve before main valve for protection |
| 110.3b Describe the function of the following valves: Ahead throttle | HP air |
| 110.3c Describe the function of the following valves: Astern throttle | LP air |
