If the pitch of the propeller is 21.2 feet,...

Question 1 of 2707066636eea28f7522a1c51b491

If the pitch of the propeller is 21.2 feet, and the revolutions per day are 93,660, calculate the day's run allowing 5% positive slip.

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Question 1 of 27070

If the pitch of the propeller is 21.2 feet, and the revolutions per day are 93,660, calculate the day's run allowing 5% positive slip.

🔍 Key Concepts

• Propeller pitch as the distance the ship would move ahead in one revolution with zero slip • How to convert feet per day into nautical miles per day (1 nautical mile = 6,076 feet) • What 5% positive slip means (actual distance made good vs. theoretical distance)

💭 Think About

• First, ignore slip and figure out how many feet the vessel would travel in one day if it advanced exactly one pitch length every revolution. What calculation do you need for that? • Once you have the theoretical distance in feet, how do you adjust it for 5% positive slip? Are you increasing or decreasing the theoretical distance? By what factor? • After adjusting for slip, what unit conversion must you perform to compare your result to the answer choices given in miles?

✅ Before You Answer

• Be sure you multiply pitch (ft/rev) by revolutions per day (rev/day) to get feet per day before doing anything else • Check that you apply 5% positive slip to the theoretical distance correctly (think: does the vessel actually travel more or less than the theoretical pitch distance?) • Confirm your final answer is in nautical miles, not feet, before matching it to the closest multiple-choice option