Q1: The vessel on which you are serving as Second Engineer develops an oil leak from the stern tube aft oil seal whilst on voyage. Write a letter to the owners of the vessel regarding the. incident, describing the temporary emergency measures taken to stop the oil leak in order to allow the vessel to enter Indian territorial waters for cargo discharge and dry docking without contravening MARPOL 1973/78. Also, information about the cause of the oil leak and the action to be taken in dry dock to rectify it may be mentioned.
Q2: With reference to fixed installations for dealing with a machinery space fire - A. Describe with the aid of a sketch a typical installation; B. Explain the testing procedure for the equipment: C. Outline the testing procedure for; (i) Remote shut down;(ii) Other equipment to be used in the event of an engine room fire.
Q9: With reference to sleeved keyless propeller assemblies: A. (i) State, with reasons, the metals used in the manufacture of the sleeve and tail end shaft; (ii)State the type and thickness of material used to bond the sleeve to the propeller boss. B. When removing the propeller from the tail end shaft, state why the following procedures are not recommended: (i) Application of push off force by means of wedges or jacks and draw off force by strong back; (ii) Expansion of propeller boss by concentrated local heating with gas torches. C. State the correct procedure for the removal of the propeller from tail end shaft
Q4: An auxiliary boiler water level control system has a differential pressure transmitter as the detecting element for water level.
A. Sketch and describe such an arrangement; B. If the transmitter was damaged describe how a replacement unit would be calibrated.
Q5: You have been appointed as Second Engineer to a new vessel that experiences severe aft end vibration. The problem is thought to emanate from the propeller. The company, “which is inexperienced in the operation of ships, requests you to investigate the problem. Describe the causes of the vibration and suggest remedies including the selection of a new propeller with a different number of blades.
Q4. Define the following types of non-destructive methods of testing:
a) Radiographic. (4)
b) Ultrasonic. (4)
c) Magnetic particle. (4)
d) Dye penetrant. (4)
Give their advantages and disadvantages.
Q7: A. (i) Sketch the pump characteristics of a typical centrifugal pump; (ii) Explain how these characteristics are obtained; B. Some engine rooms circulating pumps of the centrifugal type are arranged for variable speed operation. Sketch the characteristics curves for such a pump indicating the effect of varying speed; State the reasons for using pumps of the type referred to in B)
Q3: A. (i) Sketch a combustion gas system, suitable for inerting the cargo spaces of a vessel; (ii) Describe the operation of this system. B. State the percentage analysis by volume of the inert gas generated by the system in (A).
Q9: A. Draw a line sketch of a system used as an alternative to low pressure evaporator for producing water on board ship? B. Explain its working principle; C. What are its inherent advantages & limitations?
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