If the pitch of the propeller is 20.1 feet,...

Question 1 / 2707066636eea28f7522a1c51b48e

Question 1 of 2707066636eea28f7522a1c51b48e

If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.

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Question 1 of 27070

If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.

🔍 Key Concepts

• Propeller pitch as distance advanced per revolution (in feet per rev) • How to apply negative slip as a percentage change to the theoretical distance • Converting total distance in feet to nautical miles using the proper conversion factor

💭 Think About

• First, find the theoretical distance the ship would travel in one day with no slip using pitch and total revolutions. What multiplication do you do? • Next, decide how 6% negative slip affects that theoretical distance: does the ship travel more or less than the theoretical distance? Should you multiply by (1 − 0.06) or (1 + 0.06)? • After applying slip, you will have distance in feet. Which conversion factor turns feet into nautical miles, and which answer choice best matches your result?

✅ Before You Answer

• Confirm that you multiply pitch (ft/rev) by total revs per day to get distance in feet per day before any slip correction. • Be sure you apply the 6% slip to the total daily distance, not just to the pitch value alone. • Use the correct conversion: 1 nautical mile ≈ 6,080 ft (or 6,076 ft depending on your exam standard), and then compare the resulting miles to the choices.

Question 1 of 27070

If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.

367.2 miles

414.1 miles

381.6 miles

398.4 miles

Question 1 / 2707066636eea28f7522a1c51b48e

Question 1 of 2707066636eea28f7522a1c51b48e

If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.

Back

Question 1 of 27070

If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.