You are turning 105 RPM, with a propeller...

Question 1 / 2066636eea28f7522a1c51b6f0

Question 1 of 2066636eea28f7522a1c51b6f0

You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?

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Question 1 of 20

66636eea28f7522a1c51b6f0

You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?

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🔍 Key Concepts

• speed of advance (SoA) vs. speed through the water • relationship between RPM, propeller pitch, and theoretical speed • how slip percentage (including negative slip) changes the theoretical speed

💭 Think About

• First, calculate the theoretical speed in feet per minute using only RPM and pitch. What formula relates those three? • Then, apply the slip correction. With -1% slip, do you make the vessel faster or slower than the theoretical speed? How do you adjust the value? • Finally, convert your corrected speed from feet per minute to knots. What is the conversion factor between feet per second, nautical miles, and knots?

✅ Before You Answer

• Be sure you apply slip in the correct direction (negative slip increases speed slightly). • Confirm you are using nautical miles (6076 ft), not statute miles, for the final conversion to knots. • Double-check that your intermediate units go in order: RPM → ft/min → ft/sec → knots (or an equivalent clear path).

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Question 1 of 20

You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?

15.3 knots

16.9 knots

17.8 knots

17.4 knots

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Question 1 / 2066636eea28f7522a1c51b6f0

Question 1 of 2066636eea28f7522a1c51b6f0

You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?

Back

Question 1 of 20

66636eea28f7522a1c51b6f0

You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?

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