Now that we have the correct speed and our time of arrival, we need to use the T = D/S equation.ġ7 (nautical miles) / 20 (kts) = 0.85 hoursīased on the equation, it will take you. Instead of using mph for the equation, you need to convert your speed into knots, which is nautical miles per hour. Calculating this equation using mph would produce an inaccurate answer and a wrong arrival time. The cruising speed of your boat is not the same unit of measurement as your distance. Referring to the scenario above, we know that: Below are all the variations of the distance, speed and time equation for calculating boating times.įor this scenario, we have to determine the travel time by boat for getting to the island party. Any one part of this equation can be solved if there are numbers for the other two parts. The “D” represents distance, “S” represents speed and “T” represents time. The distance, speed and time equation is D = S x T. By using the distance, speed and time equation, you will be able to determine how long it will take to get there. The island is about 17 nautical miles from your marina and you plan on cruising at a speed of 23 mph. Let’s assume that you have to leave your dock to travel to an island party starting at 8 p.m. The following is an example scenario to get you familiar with calculating travel time by boat. This equation factors in how far you need to travel and the speed of your boat to determine how long it will take to arrive at your destination.
Instead of using old boating experiences to predict boat travel times, there is a simple and effective nautical distance calculation known as the distance, speed and time equation. Many boaters use past boat trips as a benchmark when calculating travel time to estimate when they need to leave their dock in order to arrive at a destination on time. Planning to arrive at a destination by boat can be a stressful situation if you're on a time crunch.
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