Question 25 of 30
A gas venting system on a tanker that has gas lines in each tank connected to a common gas main running the full length of the ship is called:
A
A gas-main system
B
A common-main system
C
A vent-main system
D
An independent system
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Answer & Explanation
The correct answer is Option B: A common-main system.
In a common-main system, multiple cargo tanks are connected to a single, shared gas main running the length of the ship, allowing for efficient venting or inerting of the cargo tank atmosphere.