Question 9General Subjects - Assistant Engineer
70% to passSalt water ballast is to be discharged into the No.6 port and starboard wing tanks. Which combination of valves, illustrated, must be opened, and which valves should be closed? Illustration GS-0139
A1, 2, 5 and 6 open; 4, 7, 8 and 9 closed.
B1, 2, 7 and 9 open; 3, 4, 5, 6, 8 and 10 closed.
C1, 3, 5, 6, 8 and 10 open; 2, 4, 7 and 9 closed.
D3, 4, 7 and 9 open; 1, 2, 5, 6 and 10 closed.
AI Explanation
The correct answer is C) 1, 3, 5, 6, 8 and 10 open; 2, 4, 7 and 9 closed. To discharge the salt water ballast into the No.6 port and starboard wing tanks, the valves that need to be opened are 1, 3, 5, 6, 8 and 10. This allows the ballast water to flow into the designated tanks. The valves that need to be closed are 2, 4, 7 and 9 to prevent the ballast water from flowing into the wrong tanks or areas. The other options are incorrect because they do not correctly identify the specific valves that need to be opened and closed to discharge the ballast water into the No.6 port and starboard wing tanks.
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