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All of the latest questions and illustrations on "Navigation Problems, Speed By Rpm Questions " are in the Online Study.

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Speed By Rpm Questions

 

B If the pitch of the propeller is 19.4 feet, and the revolutions per day are 96,713, calculate the day's run allowing 6% positive slip. 308.6 miles 290.1 miles 266.4 miles 327.1 miles Day's Run
C If the pitch of the propeller is 19.7 feet, and the revolutions per day are 86,178, calculate the day's run allowing 3% negative slip. 326.2 miles 279.2 miles 287.6 miles 311.4 miles Day's Run
A 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. 414.1 miles 381.6 miles 398.4 miles 367.2 miles Day's Run
D If the pitch of the propeller is 20.6 feet, and the revolutions per day are 107,341, calculate the day's run allowing 3% positive slip. 374.5 miles 389.1 miles 363.6 miles 352.7 miles Day's Run
B 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. 163.3 miles 310.3 miles 342.9 miles 217.8 miles Day's Run
A If the pitch of the propeller is 21.3 feet, and the revolutions per day are 126,214, calculate the day's run allowing 4% positive slip. 424.5 miles 459.9 miles 477.3 miles 442.1 miles Day's Run
B If the pitch of the propeller is 21.5 feet, and the revolutions per day are 96,666, calculate the day's run allowing 9% negative slip. 341.8 miles 372.6 miles 357.9 miles 311.1 miles Day's Run
C If the pitch of the propeller is 22.4 feet, and the revolutions per day are 103,690, calculate the day's run allowing 9% positive slip. 321.7 miles 416.4 miles 347.6 miles 382.0 miles Day's Run
D If the pitch of the propeller is 23.2 feet, and the revolutions per day are 94,910, calculate the day's run allowing 11% negative slip. 362.3 miles 322.3 miles 382.0 miles 402.0 miles Day's Run
D If the pitch of the propeller is 24.8 feet, and the revolutions per day are 93,373, calculate the day's run allowing 11% positive slip. 380.9 miles 307.3 miles 422.8 miles 339.0 miles Day's Run
A If the pitch of the propeller is 25.1 feet, and the revolutions per day are 91,591, calculate the day's run allowing 7% positive slip. 351.6 miles 390.0 miles 378.1 miles 404.6 miles Day's Run
C If the pitch of the propeller is 26.3 feet, and the revolutions per day are 87,421, calculate the day's run allowing 7% negative slip. 351.7 miles 419.3 miles 404.6 miles 378.1 miles Day's Run
B If the pitch of the propeller is 26.7 feet, and the revolutions per day are 131,717, calculate the day's run allowing 4% negative slip. 649.4 miles 601.6 miles 555.2 miles 578.4 miles Day's Run
D The pitch of the propeller on your vessel is 19'09". You estimate the slip at -3%. If you averaged 82 RPM for the day's run, how many miles did you steam? 370.8 373.6 393.7 395.3 Day's Run
A 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? 338.3 miles 676.6 miles 778.6 miles 389.3 miles Day's Run
C If the speed necessary for reaching port at a designated time is 12.6 knots and the pitch of the propeller is 13.6 feet, how many revolutions per minute will the shaft have to turn, assuming no slip? 85 81 94 90 Rpm
B If the speed necessary for reaching port at a designated time is 15.7 knots and the pitch of the propeller is 23.4 feet, how many revolutions per minute will the shaft have to turn, assuming a 6% negative slip? 76 64 68 72 Rpm
A If the speed necessary for reaching port at a designated time is 16.4 knots and the pitch of the propeller is 23.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 6% positive slip? 74 90 82 66 Rpm
B If the speed necessary for reaching port at a designated time is 16.8 knots and the pitch of the propeller is 22.3 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip? 66 73 61 80 Rpm
D If the speed necessary for reaching port at a designated time is 17.4 knots and the pitch of the propeller is 25.6 feet, how many revolutions per minute will the shaft have to turn, assuming a 3% positive slip? 67 63 75 71 Rpm
A If the speed necessary for reaching port at a designated time is 17.8 knots and the pitch of the propeller is 24.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% positive slip? 79 71 75 67 Rpm
D If the speed necessary for reaching port at a designated time is 18.2 knots and the pitch of the propeller is 23.9 feet, how many revolutions per minute will the shaft have to turn, assuming a 2% negative slip? 70 79 73 76 Rpm
A If the speed necessary for reaching port at a designated time is 18.5 knots and the pitch of the propeller is 21.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip? 83 90 97 114 Rpm
C If the speed necessary for reaching port at a designated time is 18.6 knots, and the pitch of the propeller is 26.2 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip? 78 75 69 72 Rpm
D If the speed necessary for reaching port at a designated time is 19.2 knots and the pitch of the propeller is 22.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% positive slip? 96 82 103 89 Rpm
B If the speed necessary for reaching port at a designated time is 19.6 knots and the pitch of the propeller is 24.6 feet, how many revolutions per minute will the shaft have to turn, assuming a 5% positive slip? 106 85 76 97 Rpm
D If the speed necessary for reaching port at a designated time is 20.7 knots and the pitch of the propeller is 23.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 3% negative slip? 98 79 74 86 Rpm
A If the speed necessary for reaching port at a designated time is 21.6 knots and the pitch of the propeller is 22.5 feet, how many revolutions per minute will the shaft have to turn, assuming a 2% positive slip? 99 87 95 81 Rpm
B If the speed necessary for reaching port at a designated time is 23.7 knots and the pitch of the propeller is 20.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% negative slip? 124 108 112 116 Rpm
A The speed necessary to reach port at a designated time is 18.7 knots. The propeller pitch is 24'03", and you estimate 3% positive slip. How many RPM's will the shaft have to turn? 81 RPM 98 RPM 104 RPM 87 RPM Rpm
D The speed of advance necessary to arrive in port at a designated time is 15.8 knots. The pitch of the propeller is 20.75 feet. You estimate 5% positive slip. How many RPM must you turn to make the necessary speed? 76.2 73.5 79.9 81.2 Rpm
B You must average 16.25 knots to reach port at a designated time. Your propeller has a pitch of 21'08", and you estimate 4% negative slip. How many RPM's must you average to arrive on time? 77 RPM 73 RPM 82 RPM 88 RPM Rpm
B From 1020, 3 March, to 1845, 5 March, your vessel steamed an observed distance of 845.6 miles. The average RPM was 78, and the pitch of the propeller was 20'03". What was the slip? -4 (%) 4 (%) -8 (%) 8 (%) Slip
D The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip? -0.7 (%) 0.7 (%) -7 (%) 7 (%) Slip
C The observed noon to noon run for a 24 hour period is 489 miles. The average RPM for the day was 95. The pitch of the wheel is 22.5 feet. What is the slip of the wheel? 3.7 (%) 3.2 (%) 3.4 (%) 3.9 (%) Slip
A The propeller of a vessel has a pitch of 19.0 feet. If the vessel traveled 183.5 miles (observed distance) in 24 hours at an average of 44 RPM, what was the slip? 7.4 (%) -7.4 (%) 11.6 (%) -11.6 (%) Slip
D The propeller on a vessel has a diameter of 18.8 feet and a pitch of 21.4 feet. What would be the slip if the vessel cruised 378 miles in a 24 hour day (observed distance) at an average RPM of 76? -1.9 (%) 4.7 (%) -4.7 (%) 1.9 (%) Slip
A The propeller on a vessel has a diameter of 19.9 feet and a pitch of 21.6 feet. What would be the apparent slip if the vessel cruised 395 miles in a 23 hour day (observed distance) at an average RPM of 78? -3.2 (%) 12 (%) 3.2 (%) -12 (%) Slip
D The propeller on a vessel has a diameter of 20.2 feet and a pitch of 19.0 feet. What would be the apparent slip if the vessel cruised 367 miles in a 24 hour day (observed distance) at an average RPM of 84? 5.2 (%) -5.2 (%) -2.9 (%) 2.9 (%) Slip
A The propeller on a vessel has a diameter of 20.6 feet and a pitch of 23.4 feet. What would be the apparent slip if the vessel cruised 538 miles in a 24 hour day (observed distance) at an average RPM of 87? -11.6 (%) 11.6 (%) -10.3 (%) 10.3 (%) Slip
A The propeller on a vessel has a diameter of 20.9 feet and a pitch of 19.6 feet. What would be the apparent slip if the vessel cruised 447 miles in a 23 hour day (observed distance) at an average RPM of 108? 7 (%) -5.6 (%) -7 (%) 5.6 (%) Slip
D The propeller on a vessel has a diameter of 21.2 feet and a pitch of 20.0 feet. What would be the apparent slip if the vessel cruised 391 miles in a 24 hour day (observed distance) at an average RPM of 88? -6.2 (%) 11.5 (%) -11.5 (%) 6.2 (%) Slip
A The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the vessel cruised 458 miles in a 23 hour day (observed distance) at an average RPM of 78? -5.6 (%) -12.3 (%) 12.3 (%) 5.6 (%) Slip
A The propeller on a vessel has a diameter of 22.8 feet and a pitch of 19.3 feet. What would be the apparent slip if the vessel cruised 287 miles in a 24 hour day (observed distance) at an average RPM of 67? 6.3 (%) -6.3 (%) 24 (%) -24 (%) Slip
C The propeller on a vessel has a diameter of 23.7 feet and a pitch of 24.8 feet. What would be the apparent slip if the vessel cruised 442 miles in a 23 hour day (observed distance) at an average RPM of 89? 7.6 (%) -11.8 (%) 11.8 (%) -7.6 (%) Slip
A The propeller on a vessel has a diameter of 24.0 feet and a pitch of 21.3 feet. What would be the slip if the vessel cruised 510 miles in a 24 hour day (observed distance) at an average RPM of 86? -17.5 (%) 17.5 (%) 12.2 (%) -12.2 (%) Slip
D The propeller on a vessel has a diameter of 24.6 feet and a pitch of 26.1 feet. What would be the apparent slip if the vessel cruised 462 miles in a 24 hour day (observed distance) at an average RPM of 72? -2.7 (%) 3.8 (%) 2.7 (%) -3.8 (%) Slip
C The propeller on a vessel has a diameter of 25.3 feet and a pitch of 23.2 feet. What would be the apparent slip if the vessel cruised 515 miles in a 23 hour day (observed distance) at an average RPM of 93? -3.6 (%) 5.2 (%) -5.2 (%) 3.6 (%) Slip
B The propeller on your vessel has a pitch of 18'09". If the observed distance for a day's run was 399.4 miles and the average RPM was 86, which statement is TRUE? The day's run by engine RPM was 404.5 miles. The slip is a negative 5%. The slip is a positive 5%. The day's run by engine RPM was 390.6 miles. Slip
B 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? -8 (%) 8 (%) 7 (%) -7 (%) Slip
B 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? 4 (%) -4 (%) 7 (%) -7 (%) Slip
A You are turning 100 RPM, with a propeller pitch of 25 feet, and an estimated slip of -5%. What is the speed of advance? 25.9 knots 22.3 knots 24.7 knots 23.5 knots Speed of Advance
B You are turning 100 RPM, with propeller pitch of 25 feet, and an estimated negative slip of 5%. What is the speed of advance? 26.3 knots 25.9 knots 23.4 knots 24.7 knots Speed of Advance
A You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance? 17.8 knots 15.3 knots 16.9 knots 17.4 knots Speed of Advance
B You are turning 68 RPM, with a propeller pitch of 18 feet, and an estimated slip of +2%. What is the speed of advance? 11.5 knots 11.8 knots 12.3 knots 10.7 knots Speed of Advance
C You are turning 78 RPM, with a propeller pitch of 21 feet, and an estimated slip of -7%. What is the speed of advance? 15.7 knots 17.8 knots 17.3 knots 14.9 knots Speed of Advance
B You are turning 82 RPM, with a propeller pitch of 23 feet, and an estimated slip of +6%. What is the speed of advance? 19.7 knots 17.5 knots 18.4 knots 17.9 knots Speed of Advance
D You are turning 84 RPM, with a propeller pitch of 22 feet, and an estimated slip of 0%. What is the speed of advance? 17.7 knots 18.0 knots 16.8 knots 18.2 knots Speed of Advance
D You are turning 85 RPM, with a propeller pitch of 19 feet, and an estimated slip of +3%. What is the speed of advance? 16.4 knots 14.7 knots 17.1 knots 15.5 knots Speed of Advance
A You are turning 88 RPM, with a propeller pitch of 19 feet, and an estimated slip of 0%. What is the speed of advance? 16.5 knots 18.1 knots 16.9 knots 17.3 knots Speed of Advance
C You are turning 90 RPM, with a propeller pitch of 24 feet, and an estimated slip of -3%. What is the speed of advance? 19.2 knots 20.6 knots 21.9 knots 18.8 knots Speed of Advance
D You are turning 93 RPM, with a propeller pitch of 25 feet, and an estimated slip of 0%. What is the speed of advance? 21.9 knots 22.4 knots 20.2 knots 22.9 knots Speed of Advance