Question 17General Subjects - 1st Asst/Chief
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 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 should be closed are 2, 4, 7 and 9 to prevent the water from going into the wrong tanks or areas. The other options are incorrect because they either have the wrong valves open or closed, which would not allow the ballast water to be discharged properly into the No.6 port and starboard wing tanks.
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