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Q4. With reference to Underwater Inspection in lieu of Dry docking (UWILD)

A. Explain in detail, how an underwater survey is carried out. (6)

B. State the requirements to be fulfilled before an underwater survey is acceptable to the survey authority. (5)

C. Construct a list of the items in order of importance that the underwater survey authority should include. (5)

Q3. Your ship is due for Drydocking. Prepare repair specifications for the following:

a) Main Engine cooling sea water Overboard valve

b) Aft winch hydraulic oil pressure line, holed at deck penetration in Steering Compartment

c) Deck seal of a IG system used in an oil tanker

Q6. a) Describe the inspection, which is required to be carried out in the dry-dock after the stern of a ship has heavily struck a dock wall. (8)
b) The propeller is found to be damaged, and it is decided to fit the spare propeller. Describe the process and mention the precautions to be taken to ensure correct assembly. (8)

Q1. (a) Under which all circumstances, drydocking of a vessel is required. (8)

(b) What all repair and maintenance works are expected to be carried out in Dry Dock? (8)

Q3. Describe following procedures for rudder maintenance in a dry dock.

a) What is Jumping Clearance and why is it considered a valve of importance? (8)

b) What is Rudder Drop and describe the procedure for measuring the rudder drop? (8)

Q6. The vessel upon which you are serving has entered dry-dock and Second engineer has asked you to inspect the shipside valves for defects. Draw a list of different ship side valves and indicate the possible defects. What maintenance is carried out on them, in the drydock? (10)

a) Explain why EACH of the defects are of importance. (6)

Q5. a) Describe safety issues which need to be addressed at all times during vessel is in Dry Dock. (8)

b) Describe common Dry Dock Jobs with their inspection points during dry docking of the vessel. (8)

Q1. a) Describe the preparations required before drydocking a vessel. (5)

b) Describe what preparation are to be made prior entering a dry dock. (6)

c) Describe actions to be taken, when vessel has set on the blocks in dry dock. (5)

Q2. With reference to dry docking, define the responsibilities of the Second Engineer: (16)

A. Prior to docking.

B. Whilst the vessel is in dry dock.

C. Prior to flooding and leaving the dock.

Q3. Work is being carried out in drydock on a large sea water inlet chest and the valves. Describe the inspection you would carry out:

(a) As the work starts (8)

(b) During and after the work. (8)

Q3: Your ship after having been accidentally grounded was taken to a dry-dock for inspection and necessary repairs. What defects would you look for in the following parts, that may have sustained damage due to grounding and suggest methods of repairs and tests that may be required to be carried out to the defects noticed:

A. Propeller and tail end shaft.

B. Main engine crankshaft.

Q8. Explain how EACH of the following hull defects should be dealt with;

(a) A cracked weld;

(b) A severe indentation in way of a frame;

(c) Surfaces suffering from general corrosion although the extent of wastage does not warrant plate replacement;

(d) A bilge keel fractured at the forward end.