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Q8. With reference to fuel as used for main engine operations: A. State why ordering of bunkers should be by reference to a defined specification rather than simply by viscosity B. Describe shipboard tests which can be carried out on bunkers as delivered in order to assess i. Water content; ii. The presence of catalytic fine; iii. Viscosity C. Explain the possible significance of abnormally high bunker delivery temperature in relation to the viscosity of the fuel ordered