The propeller on your vessel has a pitch of...

Question 1 / 2066636eea28f7522a1c51b50e

Question 1 of 2066636eea28f7522a1c51b50e

The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, what was the slip?

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Question 1 of 20

66636eea28f7522a1c51b50e

The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, what was the slip?

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🔍 Key Concepts

• How to compute theoretical distance from propeller pitch, RPM, and time • Formula for propeller slip % using theoretical vs observed distance • Converting hours and minutes into decimal hours correctly

💭 Think About

• First, how long (in hours) is the time interval from 0800, 18 April to 1020, 19 April? Convert it to decimal hours. • Given RPM, pitch (in feet), and total time, how do you find the theoretical distance the vessel would travel with 0% slip? Make sure units all match (feet vs nautical miles). • Once you have both theoretical and observed distances, which slip formula uses (theoretical − observed) and which uses (observed − theoretical), and how does that affect the sign (+ or −) of slip?

✅ Before You Answer

• Confirm your time interval in hours is correct before doing any other calculation. • Be sure to convert feet to nautical miles accurately (use 6076 feet per nautical mile). • Double-check the sign of slip: is the vessel traveling less than, or more than, the theoretical distance? This determines whether slip is positive or negative.

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Question 1 of 20

The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, what was the slip?

-7.00%

8.00%

7.00%

-8.00%

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Question 1 / 2066636eea28f7522a1c51b50e

Question 1 of 2066636eea28f7522a1c51b50e

The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, what was the slip?

Back

Question 1 of 20

66636eea28f7522a1c51b50e

The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, 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?

Quick actions

— No credit card needed