Your vessel's propeller has a pitch of...

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Question 1 of 2066636eea28f7522a1c51b7ed

Your vessel's propeller has a pitch of 22'06". From 0530, 19 March, to 1930, 20 March, the average RPM was 82. The distance run by observation was 721.5 miles. What was the slip?

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Question 1 of 20

66636eea28f7522a1c51b7ed

Your vessel's propeller has a pitch of 22'06". From 0530, 19 March, to 1930, 20 March, the average RPM was 82. The distance run by observation was 721.5 miles. What was the slip?

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🔍 Key Concepts

• Propeller pitch as theoretical distance advanced per revolution • How to compute theoretical distance run from pitch and RPM over time • Formula and sign convention for propeller slip percentage (positive vs negative)

💭 Think About

• First, find the total number of revolutions the propeller made between the two times; what time interval in hours are you using? • Convert the pitch from feet and inches to a single unit, then compute the theoretical distance the vessel "should" have traveled with no slip. • Compare the theoretical distance with the observed 721.5 miles: is the vessel actually going farther or less than theoretical? Based on that, should slip be positive or negative, and about what percent?

✅ Before You Answer

• Be sure you correctly convert 22'06" into feet (and then into nautical miles). • Use a consistent unit (feet vs nautical miles) for both theoretical and observed distances before finding slip%. • Remember the slip formula structure: Slip % = (Theoretical − Observed) / Theoretical × 100, and match the sign with the answer choices (plus or minus).

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Question 1 of 2066636eea28f7522a1c51b7ed

Your vessel's propeller has a pitch of 22'06". From 0530, 19 March, to 1930, 20 March, the average RPM was 82. The distance run by observation was 721.5 miles. What was the slip?

Back

Question 1 of 20

66636eea28f7522a1c51b7ed

Your vessel's propeller has a pitch of 22'06". From 0530, 19 March, to 1930, 20 March, the average RPM was 82. The distance run by observation was 721.5 miles. What was the slip?

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?

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