DieselShip's Online Content Library

Q1. Discuss the factors that lead to the selection of materials for use in a sea water cooled, multi-tubular heat exchanger. (10)

Q5. Describe, with the aid of a sketch, the principle of operation of a capacitance electrode level measuring transmitter. (10)

Q3. With reference to propeller cavitation;

(a) define cavitation (2)

(b) describe FOUR detrimental effects of propeller cavitation (8)

Q4. With reference to pump selection, state any TWO types of pump for EACH of the following applications, stating why they are suitable.

(a) bilge pumping (2) (b) Cargo oil stripping (2)              (c) Sewage sludge (2)

(d) Lubricating oil circulating (2)               (e) Sea water circulating (2)

Q5. (a) Sketch the hydraulic circuit for a ram type steering gear that complies with the single failure concept and automatic isolation. (6)

(b) Describe how automatic isolation, for the hydraulic circuit sketched in part (a), is achieved within 45 seconds should leakage of system oil occur. (4)

Q6. With reference to the treatment of domestic water for potable use.

(a) describe the principle of operation of a steriliser that uses silver irons; (4)

(b) State the advantages of silver iron sterilisation over other methods; (2)

(c) State the inspections and maintenance that should be carried out on EACH of the following;

(i) Fresh water tanks (2)

(ii) calorifiers (2)

Q7. (a) State a block diagram of a fully automated air conditioning system for accommodation spaces, annotating the relevant temperatures and relative humidities throughout the system. (7)

(b) Describe how bacteria are prevented from multiplying to a harmful level in an air conditioning system. (3)

Q8. As chief engineer officer appointed to a newly acquired vessel, describe the inspection that should be carried out to ensure satisfactory condition and operation of the ship’s fire fighting equipment. (10)