DieselShip's Online Content Library

Q3. As second engineer you have been requested to obtain a set of indicator card from the large slow speed engine of a recently purchased second hand ship.

A. Describe your initial checks and preparations;

B. State with reason the types of card you would consider necessary and explain the procedure for obtaining these;

C. State in order of importance the additional information required with the card;

D. State your procedure for analysis of the cards and obtaining cylinder powers.

Q2. A. How is the cylinder lubricators fitted in a large marine diesel engine that has a water jacket? B. Where is the location of the lubricator outlet in relation to the piston rings on the piston? C. Why is this position necessary?

Q4. A. Briefly describe the causes and effects of bacterial attack of lubricating oil.

B. Bacterial activity has been detected in the lubricating oil of the main engine fitted in the ship aboard which you are serving as 2ndeng. Write a letter to the owner/operator of the ship indicating the action you intent to take and offer suggestion to the avoidance of future incidents.

Q6: With reference to Turbo-Chargers;

A. Explain why when surging occurs, the speed off the turbocharger is seen to change slightly;

B. Give examples of defects likely to result in surging;

C. Explain in simple terms what occurs in a turbocharger and the diesel engine as the speed / power increases. Based on the explanation what is meant by matching of T/C with an engine?

D. State the advantage of fitting uncooled turbochargers.

Q5. A. Describe briefly the operation of an electrical or hydraulic main engine governor B.  For the type described indicate how failure can occur and the action to be taken if immediate correction cannot be achieved and the engine must be operated.

Q1. With reference to a particular make of main propulsion unit, describe how the engine is reversed manually and discuss the problems involved and the safety precautions which would be required if the control were operated remote from the machinery space.

Q7. With respect to Diesel Engines, describe the cause of – i. Piston rings that is too tight in the piston grooves; ii. Corrosion of piston rings; iii. Piston grooves that are worn; iv. Piston rings that is too slack with piston grooves. B. Describe the effect of each of the faults listed above and the remedial action for each.

Q8. A. Describe the precaution necessary during the initial running-in of an Auxiliary Engine run on which is newly installed or has a major overhaul; B. Explain the possible causes of oxidation of lubricating oil.  C. State the frequency with which oil samples should be taken for analysis.

Q9. With reference to main engine tie rod explain.  A. Function; B. Effect on main engine in case slack; C. Identifying slackness; D. Material; E. Tightening procedure