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Q3. Explain the purpose of following and ship construction with suitable sketches. (16)

(i) Frame

(ii) Beam

(iii) Floor

(iv) Stringer

Q4. (a) What are the different classes of subdivision of fire protection in ships? (8)

(b) What are the conditions to be met by different classes of subdivision? (8)

Q2. (a) What are the causes of an uptake fire? (6)

(b) State the conditions under which light soot fire, intensifies to a high temperature fire in boiler uptake. What temperatures are produced in each case. (6)

(c) How boiler uptake fire is controlled? Why the use of soot blowers is prohibited? (8)

Q8. (a) Explain 'short cycling' in the context of refrigeration and air conditioning systems onboard ship. State its causes and how it can be avoided. (6)
(b) State the symptoms of 'overcharging' and 'undercharging' in refrigeration system. What are its effects and state remedial measures (5)
(c) What are the visible indicators of oil in refrigeration system. What would be its effects? State remedial measures (5)

Q4. a) Sketch and describe the working of a Sprinkler type, automatic fire detection and firefighting system on ships, labelling it components in the circuit (10)

(b) What maintenance is required periodically? State the routine tests required? (10)