Question 1 of 2707066636eef28f7522a1c51fe1e

The main engines on the anchor-handling supply boat to which you are assigned are fitted with duplex secondary spin-on fuel filters. Concerning the selector handle, what statement is true?

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Question 1 of 27070
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Q

The main engines on the anchor-handling supply boat to which you are assigned are fitted with duplex secondary spin-on fuel filters. Concerning the selector handle, what statement is true?

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🔍 Key Concepts

• Duplex fuel filter operation on main propulsion engines • Purpose of having two separate filter elements with a selector handle • What the BOTH position is intended for in duplex systems

💭 Think About

• Think about why the manufacturer installs two separate filters instead of one bigger one. When would you want only one online and the other standing by? • Consider what might happen if you normally run in BOTH all the time and then one side starts to plug. Does that help or hurt your ability to switch to a clean filter? • Ask yourself during a filter changeover: what selector positions must you pass through, and which position should be only temporary versus normal running?

✅ Before You Answer

• Verify which selector positions allow one element in service and one on standby versus both working together • Check which answer best preserves redundancy and the ability to change filters without shutting down the engine • Confirm that the role of the BOTH position matches what’s typically needed only during a transition/changeover, not normal continuous operation