Q4. (a) Describe with aid of a line diagram the layout and components of a hydraulic system suitable for the operation of deck machinery; (8)
(b) Explain how the hydraulic system pressure is controlled assuming the use of a variable Delivery pump. (4)
c) State which design of hydraulic motor is used in the system described in (b) (4)
Q7. With reference to hydraulic deck machinery:
a) State the sources for contamination of the system. (6)
b) Describe possible effects due to contamination. (6)
c) Explain how the oil can be monitored by ships staff. (4)
Q5. (a) What is the role of Windlass in the safe operation of Ship? (6)
(b) Explain the following terms used in respect of windlass operation. (10)
(i) Cable lifter
(ii) Brake shoe
(iii) Warp end drum
(iv) Dog clutch
(v) Slipping clutch
Q3. (a) Explain the role of hatch covers in dry cargo vessels and mention the types of mechanically operated hatch covers (5)
(b) Sketch and describe the operation of hatch cover of single pull type Macgregor design, front rolling type (7)
(c) How is the 'watertightness’ ensured for same? Explain the function of 'cleats'. (4)
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