| While at normal sea speed the rudder movement stops, but is restored after changing over power units. At the earliest opportunity the faulty power unit is restarted with the following results: the rudder can be remotely swung in only one direction, however using the trick wheel equal movement of the variable stroke control device from neutral is available.The probable cause is __________ . |
| A) only the solenoid coil 'F2' has burned out |
| B) either solenoid coil 'F1' or 'F3' has burned out |
| C) shaft "K" has developed a fault in the mechanical linkage |
| D) that pump "G" can not develop adequate discharge |
