DieselShip's Online Content Library

Q1. (a) What are the various Static stresses that act on a vessel at rest in still water? Explain with the aid of sketches. (10)

(b) Give examples for dynamic stresses on a vessel? (6)

Q2. a) What is the purpose of water tight doors fitted on bulkheads? (4)

b) Name the locations of water tight door in a vessel. (4)

c) Sketch and describe a vertically mounted water tight door. (8)

Q3. a) What are the purposes of providing Forepeak and aft peak tanks? (6)

b) Draw a simple sketch of the aft peak tank with all the relevant structural members clearly labeled. (10)

Q4. With reference to hull protection against corrosion describe how EACH of the following operate:

a) Sacrificial anodes (8)

b) Impressed current system (8)

Q5. With regard to the carriage of crude oil and its associated products, state a few differences in the constructional features of a conventional tanker and a double hull tanker. (16)

Q6. The ratios of length, breadth and draught of a vessel are 18.5: 2.5: 1. The water plane area coefficient is 0.73 and the TPC is 0.77 more in sea water than in fresh water. Calculate the beam of the ship and TPC in fresh water. (16)

Q7. A ship of 6400 t displacement is floating in salt water. The ship has to proceed to a berth where the density of the water is 1008 kg per cubic meter. Find how much cargo must be discharged if she is to remain at the salt water draft. (16)

Q8. A bilge holding tank of 5 m length, 3 m width and 1.8 m depth has water of density 1.020 t/m3 upto a sounding of 1.3 m and oil of density 0.86 t/m3 is floating on top of water upto an ullage of 0.3 m. Calculate the mass of water and oil in the tank (16)

Q9. A piece of aluminium has a mass of 300 g and its volume is 42 cm3

Calculate

a) its density in kg/m3

b) the relative density

c) the mass of 100 cm3 of aluminium (16)