Stablisers,Steering gear & Davits

Question 1

Dynamic seals stop leakage from….

Answer 1

Linear & rotary movement

Question 2

Which oil is used for system flushing?

Answer 2

OX30

Question 3

When flushing a system,oil is heated to what temperature to reduce viscosity?

Answer 3

65°

Question 4

Name the 3 stabiliser positions

Answer 4

1. Stabilise
2. Full bypass
3. Fin lock

Question 5

On a type 23 name 4 modes of operation of a stabiliser

Answer 5

1. Signal off
2. Normal
3. Quiet
4. Forced roll

Question 6

The stabiliser lub pumps lubricate which 3 bearings?

Answer 6

1. Inboard
2. Sea
3. Actuator

Question 7

Name the 2 types of stabiliser

Answer 7

1. Active
2. Passive

Question 8

Name the 3 factors that transmit & control power in a hydraulic system

These help you diagnose problems in the system

Answer 8

1. Flow
2. Pressure
3. Direction

Question 9

Name the 5 questions to ask yourself when solving a problem

Answer 9

1. What do I check?
2. What do I check with?
3. Where do I check?
4. What do I expect to read?
5. What do I check?

Question 10

What are the requirements to repacking stab glands afloat?

Answer 10

• Watertight intergrity
• Diving assistance
• Personnel suitably dressed
• Check BR’s & S2022A
  On completetion of work stab is to be force rolled

Question 11

Name 2 Agreement checks for the steering gears

SAFER

Answer 11

• Change to primary,alignment from SSP & PSP
• Rudder back to midships

SSP=secondary PSP =primary

Question 12

Name the valves contained in a Davit

Answer 12

• Speed control
• Direction control
• Brake
• Flow
• Lowering
• Pilot NRV
• Throttle & NRV
• Governor

Question 13

The Flight deck crane system is composed of…?

Answer 13

• Hydraulic Power pack
• Air blast cooler
• Load control manifold
• Line mounted valves
• Dual joystick lever controllers