The propellers on your twin screw vessel...

Question 1 of 2707066636eea28f7522a1c51b4f8

The propellers on your twin screw vessel have a pitch of 16'04". What is the distance in a day's run if the average RPM is 94, and you estimate 7% positive slip?

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Question 1 of 27070

Q

The propellers on your twin screw vessel have a pitch of 16'04". What is the distance in a day's run if the average RPM is 94, and you estimate 7% positive slip?

🔍 Key Concepts

• Propeller pitch as theoretical distance advanced per revolution • How to convert inches of pitch and RPM into miles per day • Effect of positive slip percentage on the theoretical distance

💭 Think About

• First, find how many feet of advance you would get per minute with zero slip at 94 RPM using the given pitch. • Then, scale that to a full 24-hour day, keeping track of units (feet → nautical miles or statute miles as required by the problem). • Finally, adjust the theoretical distance by 7% positive slip and compare your result to the answer choices.

✅ Before You Answer

• Be very clear what 16'04" pitch means in inches, then feet, and use that per revolution. • Carefully check your unit conversions: minutes to hours to days, and feet to miles. • Apply the 7% positive slip to reduce the theoretical distance, not increase it, and only after you’ve computed the no‑slip distance.