45 Engine Systems

Question 1

What do the hydraulic systems control

Answer 1

Steering nozzles, reversing buckets, interceptors

Question 2

What are the steering and reversing buckets controlled by

Answer 2

Vector

Question 3

What RPM shall you not exceed when back flushing

Answer 3

1200RPM

Question 4

How do the generators work

Answer 4

• Generators send power to the alternating current unit (ACU, 2each) and then produces a clean 240 volts @60Hz
• ACU then sends it to the transformer and makes 240/120 volts

Question 5

What does the 1.02:1 ratio mean for the reduction gear

Answer 5

The engine crank shaft will rotate 1.02 times for every one turn on the impeller shaft

Question 6

What are Restrictive discrepancies

Answer 6

Those which restrict the operations of the asset such that it can preform some but not all activities safely

Question 7

What are some examples of RBM restrictive discrepancies examples

Answer 7

•Engine coolant temp is between 186 and 211
• Bilge pumps inoperable
•VHF-FM radio inoperative
Radar inoperative

Question 8

What are Major discrepancies

Answer 8

Major discrepancies are those that degrade the effectiveness of the boat to preform one or more missions

Question 9

What are some major discrepancies for the RBM

Answer 9

• deviation table missing
• depth sounder inoperable
• radar inoperable
• one generator not operating properly
• water tight integrity

Question 10

What are disabling Casualties

Answer 10

Disabling casualties are those that make the boat Not Mission Capable

Question 11

Examples of disabling casualties

Answer 11

Electronics will not energize
FM-200 is inoperable
Hull breach below the waterline