Q2. A. A hydraulically operated ballast tank valve situated in the duct keel has failed to close. State as Second Engineer your procedure for directing safe entry by engine room staff to the duct keel to ascertain the cause and possibility to carry out a repair.
B. State if any procedure is to be followed before making an entry, and the relevant IMO code under which such procedures are required
Q7. Define briefly the construction details peculiar to each of the following types of closure that enables their primary function to be fully realized:
A. Water tight doors; B. Fire proof doors; C. Gas tight doors,
D. With reference to above doors, State why (A) can perform function of (B) as well as of (C), whereas function of (B) and (C) are restricted solely to their primary function.
Q5. With reference to arresting the headway of vessels of considerable mass, give reasoned opinions on EACH of the following statements: A. Full power availability for astern running of the propeller is inconsequential; B. Results have been disappointing in those instances where rudders have been adapted to act as retarders; C. Discreet use of transverse thrust units may reduce stopping distance.
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