| 1 | Bearings allow the shaft to turn while permitting the housing to remain still. | |
| 2 | The reel is supported by expansion shaft is unwinded by a motorized wheel. | |
| 3 | Its compact structure, light is not pumping from wells not to long shaft. | |
| 4 | The turbine can drive the ship directly or be used to generate electricity to drive the prop shaft. | |
| 5 | Mainly by the clutch, transmission, universal joints, drive shaft and the composition of bridges. |