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Boat Upstream & Downstream - Tips, Tricks, Formula & Sample Questions
Now, speed of the boat in still water = 1/2 [ speed of the boat in upstream + speed of the boat in downstream] =1/2 [4 + 5] = 1/2 ? 9 = km/h. And speed of the current = 1?2 [speed of the boat in downstream � speed of the boat in upstream] = 1/2 [5 � 4] = 1/2 ? 1 = km/h. Subject: Boats and Streams - Quantitative Aptitude - Arithmetic Ability Exam Prep: Bank Exams. Related Questions. Q: A boat covers km upstream in 13 hours and the same distance downstream in 11 hours. What is the speed (in km/hr) of the boat in still water? A) B) Since the distance downstream (with the current) equals the distance upstream (against the current), and if we: Let B stand for the speed (rate in mph) of the boat in still water, and using the formula rate X time = distance, the equation will be: (B+7) x 3 = (B-7) x 5 3B + 21 = 5B - 35 56 = 2B. B = 28 mph Traveling downstream, the current will cause the boat to go faster so the 7 mph current is added to the boat's still water speed. When canoe travels upstream, its speed relative to the bank of the river is the difference u - v, and it is equal to. u - v = (again, speed =). Rewrite these equations with calculated right sides� It is the current speed. Problem 2. It took an hour for a boat to go six miles upstream. Using the same Speed Of The Boat In Upstream Pdf path, the boat took only 45 minutes to return. What was the speed of the boat in still water? What was the speed of the current? myboat300 boatplans Solution. From the condition, u - v = = 6, (1) (the speed relative to the river bank when the boat goes upstream =). u + v = = = 8. (2) What Is The Average Price Of A Boat University (the speed relative to the river bank when the boat goes downstream = ; hours = 45 minutes).

Please note - by using this calculator you agree to the following license provisions: This calculator is for non-commercial use by the general public only. It is proved for entertainment only and not intended to be used for any other purpose. Commercial use for any reason is prohibited. A license for commercial use may be available upon application to BAM Marine on a per use or annual basis.

There are so many factors that affect boat speed that it is hard to make accurate estimates of what the real top end will be. Mercury Marine uses the following formula to estimate potential top end, this calculator uses this formula. The constants above are from close to 20 years ago. There have been so many changes in hull design that today they are not even close. To be honest our business has changed and we have The Fishing Boat Pub East Runton Glass not done enough recent testting to update them.

The best thing to do is calculate a constant from published tests or your personal setup and go from there. The calculator below uses the above formula. Plug in your info, and click "Calculate" on the item you want to compute. By using known values for the weight, power and speed you can come up with a more accurate constant for your boat.

You can then see what effect changes to weight or power will have on top speed. Using the calculator in this fashion will produce surprisingly accurate results. Boat Speed Predictions. Weights should be actual running weight as determined by a scale and are to include driver, fuel, engines, supplies etc. We have found manufactures published weight to be unsuitable for these calculations.

Shaft horsepower is to be the actual uncorrected engine horsepower less drive train losses. Boat Speed Calculator. Accurate data is important when using this calculator. Total Shaft Horsepower. Pompano Beach FL Contact BAM Marine.

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