8.Describe the annual airtight integrity test and examination that is required to be carried out on an inflatable or rigid inflatable craft.
(10)
- (a) List THREE defects that may be found during an inspection of a fixed bladed propeller, stating the possible cause of EACH.(6)
(b) State the likely consequences if the defects stated in part (a) are not rectified.(4)
- With reference to surface preparation for the painting of a vessels hull in dry-dock, list the advantages and disadvantages of EACH of the following methods:
(a) abrasive blasting;(5)
(b) hydroblasting.(5)
With reference to the visual inspection of lifting gear before use, state the removal from service criteria for EACH of the following slings when visually inspecting before use:
(a) wire rope;
(b) synthetic fibre.
Note: The slings are within inspection dates, are of the correct SWL and clearly labelled.
- With reference to a reciprocating air compression:
(a) define the term Volumetric Efficiency;(4)
(b) explain how the operation of the suction and delivery valves affect the volumetric efficiency of the compressor.(6)
- With reference to a vessel’s motion control:
(a) outline the SIX degrees of freedom;
(b) explain the term damping;(4)
(c) state THREE considerations to be made, before the installation of a motion reduction system.(3)
- Describe the procedure that should be followed if an outboard motor has been submerged in sea water.(10)
- With reference to the International Convention for the Safe and Environmentally Sound Recycling of Ships:
(a) state the operational requirements for compliance;(4)
(b) list FOUR prohibited hazardous materials;(4)
(c) list TWO hazardous materials whose use should be restricted.(2)