DieselShip's Online Content Library

Q1: It has been found necessary to completely replenish all of the oil in the lubricating system of a large motor ship (or steam turbine ship). As Chief Engineer, write a detailed report to the Superintendent. Engineer justifying this heavy expenditure, the expediencies required to prevent further trouble during the voyage, and suggestions of permanent measures to avoid a recurrence of the initial problem

Q2. A. Sketch and describe a Pilgrim Nut for securing a propeller to the screw shaft; B. Describe how this device is used to loosen the propeller on the shaft when removal or inspection becomes necessary; C. Give four reasons why this method is considered to be superior to all other methods.

Q3. A. Describe an air conditioning system for a passenger car ferry; B. Explain in detail how the humidity of the air is measured and controlled.

Q4: Various tests are carried out on material used for boiler construction. With reference to these tests, explain the following terms (1) elongation (2) yield point (3) area reduction (4) ultimate stress.

Q5: Describe how you would remove air from a tele-motor system. What are the dangers of air in a telemotor system?

Q6: A. What gases are present in oil tanks after pumping out? B. How would you remove these gases and what are the dangers of these gases? C. What is the chemical composition of coal? Give the average calorific value of coal. Describe the chemical process when coal is burned in air.

Q7: Describe a bilge system suitable for a ship with cellular double bottoms. By means of a simple sketch, show the positions of pumps, manifolds, suctions, etc.

Q8. A ship is engaged in filling double-bottom and deep thanks with fuel. Explain and describe: A. The dangers implicit in the operation; (ii)the precautions that must he observed (iii)the legal requirements that must be adhered to.

Q9. Sketch and describe a fluid coupling as used with a prime mover. Why are these couplings fitted?