Coast Guard Regulations (46 CFR) require a...

Question 1 of 270705eccefa1bacbc34ba4d4717e

Coast Guard Regulations (46 CFR) require a single tail shaft with water lubricated tail shaft bearings, stress-relieved keyway, and fabricated from materials resistant to corrosion by sea water, to be drawn and examined once in every __________.

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Question 1 of 27070

🔍 Key Concepts

• 46 CFR Subchapter F – Marine Engineering shaft inspection intervals • Differences in inspection periods for single vs. multiple tail shafts • How water-lubricated, corrosion‑resistant, stress‑relieved shafts affect inspection frequency

💭 Think About

• Ask yourself: does the Coast Guard generally allow longer or shorter intervals for a single tail shaft that is water‑lubricated and corrosion‑resistant? • Compare the common inspection cycles you know (drydock, internal structure, tail shaft) and think which one matches a periodic but not too frequent detailed exam. • Think about why the Coast Guard specifies extra design features (water‑lubricated, stress‑relieved keyway, corrosion‑resistant). Are they compensating for a longer or shorter required inspection interval?

✅ Before You Answer

• Look up the exact wording in 46 CFR Part 61 – Periodic Tests and Inspections, especially the section on tail shaft examination. • Confirm which interval listed there applies specifically to a single tail shaft with water‑lubricated bearings and corrosion‑resistant material (don’t mix it up with oil‑lubricated or multiple shafts). • Verify that the interval you pick is a standard USCG inspection period (it should match one of the common year‑based cycles used repeatedly in 46 CFR).