As a chief engineer on a motor vessel in a...

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Question 1 of 2066636eee28f7522a1c51e649

As a chief engineer on a motor vessel in a shipyard undergoing extensive repairs/modifications or being repaired after a significant grounding, what factors would you consider paramount to ensure the main engine and line shafting are properly aligned?

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Question 1 of 20

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🔍 Key Concepts

• Main engine and shaft line alignment after major repairs or grounding • Differences between measurement/inspection vs. root confirmation of correct alignment • What the chief engineer should treat as primary proof that alignment is correct, not just assumed

💭 Think About

• Which option directly verifies that the actual load and geometry of the main engine and shaft line match the designer’s intended alignment, rather than just checking fasteners or clearances? • In a post‑grounding or heavy repair scenario, what evidence would most convincingly show that the shaft is running true and the engine is not being distorted or overloaded at certain bearings? • Which choice reflects a final, quantitative confirmation of correct alignment, as opposed to relying on someone else’s work or a partial check?

✅ Before You Answer

• Identify which option refers to measured values compared to design data related specifically to crankshaft and shaft line alignment. • Distinguish between checks that only ensure things are secure or within clearance versus checks that prove the load distribution and deflections are correct. • Ask: In a dispute about alignment quality, which single type of record would be most persuasive to a surveyor or class inspector that alignment is acceptable?

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