DieselShip's Online Content Library

Q1. A. Explain how analysis of used lubricating oil can be used as a “health-monitoring” tool for diesel engines.

B. Describe how vibration measurement can be used with a main engine turbo-charger:

i. For fault analysis.

ii. For condition monitoring with respect to maintenance.

iii. As a substitute to opening up machinery for survey.

Q2. Compare the destructive testing done on engineering materials with non-destructive testing done on engineering components. Briefly describe one destructive test and two non-destructive tests to illustrate your answer. (16)

Q3. A. Describe the preparation necessary before the application (in dry dock) of sophisticated or approved long life coating to the underwater surface of the hull. (8)

B. State the significance of the roughness profile. (4)

C. List the different sophisticated coatings which are available. (4)

Q4. With reference to steels used in shipbuilding and marine engineering:

(a) Describe EACH of the following types of failure. (6)

(i) Brittle failure.

(ii) Ductile failure.

(b) Explain the term ductile to brittle transition stating the factor that determines ductile to brittle transition. (6)

(c) Describe a test to determine the value of brittle fracture of a specimen test piece. (4)

Q5. (a) Define proportional control action. (4)

(b) Sketch and describe a simple pneumatic proportional controller. (6)

(c) State a process where a proportional controller may be employed. (3)

(d) State the disadvantage of proportional only action. (3)

Q6. With reference to Keyless Propeller:

A. Sketch a section through a keyless sleeved propeller. (6)

B. State the advantages of using a keyless sleeved propeller. (6)

C. State with reason, Which metal sleeve should be made for contact with the forged mild steel tail shaft? (2)

D. State the material used to bond the sleeve to the propeller and the general thickness of the bonding material. (2)

Q7. A. Draw a block diagram for a fully automated accommodation air conditioning unit, labelling the component parts and indicating the directions of air flow. (8)

B. Explain why the unit includes means of dehumidification and humidification. (4)

C. A chart is used for ensuring that the accommodation conditions are within the so-called Comfort Zone: what useful information does the chart give? (4)

Q8. With respect to the steering gear, answer the following:

(a) Explain with a diagram, a “fail safe steering gear” fitted on a tanker of more than 100000 DWT. (10)

(b) Explain the sequence of events that take place when an oil leak takes place in one of the hydraulic pipe lines. (6)

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Q8. Sketch and describe a “fail safe steering gear” suitable for use on a tanker of more than 100,000 T dwt; Explain the sequence of events that take place when an oil leak takes place in one of the hydraulic pipe lines. (16)

Q9. (a) Describe the principle of coil-operated brake suitable for winches and other deck machinery. (8)

(b) Explain with suitable sketches how the windlass is relieved of strain when a ship is anchored. (8)

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Q1. With respect to Windlass and deck Machinery:

(a) Describe the principle of coil-operated brake suitable for winches and other deck machinery.

 (b) Explain with suitable sketches how the windlass is relieved of strain when riding at anchor.