The exposed portion of the outboard...

Question 1 / 205eccefa1bacbc34ba4d47178

Question 1 of 205eccefa1bacbc34ba4d47178

The exposed portion of the outboard propeller shaft is protected against seawater corrosion by __________.

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Question 1 of 20

5eccefa1bacbc34ba4d47178

The exposed portion of the outboard propeller shaft is protected against seawater corrosion by __________.

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🔍 Key Concepts

• seawater corrosion mechanisms on steel shafts • difference between temporary coatings (like grease or paint) and permanent physical protection • how abrasion and rotation of a propeller shaft affect any protective material

💭 Think About

• For each option, ask yourself: Will this survive long-term on a rotating shaft that is constantly in seawater and subject to sand, silt, and marine growth? • Consider which methods are normally used for underwater metal protection on moving parts versus methods used on hull surfaces. • Think about whether relying on an existing corrosion layer is actually considered protection in marine engineering.

✅ Before You Answer

• Eliminate any option that would quickly wash off or wear away on a spinning shaft. • Focus on methods that provide a durable, physical barrier between seawater and the metal of the shaft. • Ask whether the method described is something a classification society or shipyard would realistically approve for submerged, rotating machinery.

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Question 1 of 20

The exposed portion of the outboard propeller shaft is protected against seawater corrosion by __________.

a heavy lubricant

a covering of plastic, rubber, or shrunk-on composition sleeve

a corrosion-resistant paint

a layer of oxidation formed when the metal of the shaft is exposed to seawater

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Question 1 / 205eccefa1bacbc34ba4d47178

Question 1 of 205eccefa1bacbc34ba4d47178

The exposed portion of the outboard propeller shaft is protected against seawater corrosion by __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d47178

The exposed portion of the outboard propeller shaft is protected against seawater corrosion by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed