If you've ever wondered how fast your kayak is traveling or if you're wondering which kayak will be the fastest, you measure its speed in a variety of ways. You can measure maximum speed by plugging several variables into a mathematic calculation or use a GPS device. Neither are 100 percent accurate, but will give you an approximate speed.
The Kayak
The longer and thinner a kayak is, the faster it will travel through the water. The design of the kayak also plays a role in how efficient it is in the water. Recreational kayaks tend to be slower because they are between 10 and 12 feet long. Touring kayaks, or sea kayaks, are made to travel over longer distances. At 12 to 16 feet long, they are capable of higher speeds. There is a tradeoff, however, as longer boats are also more difficult to turn and maneuver.
Human Limitations
The speed of a kayak is influenced by the power you use to propel the boat forward with your arm, core and leg strength. This power output varies between a sprint speed that can only be maintained for shorts bursts and a cruising speed that you are able to maintain for longer periods. As you generate the boat's motor, the resistance of the water works against you. Also, the faster you travel, the more residual resistance you must overcome.
Hull Speed
Hull speed is essentially the maximum speed the kayak can travel. Hull speed can be calculated in knots by entering the length of your kayak into this formula: Hull Speed = 1.34 * (LWL)1/2. Using this calculation, you'll see that the hull speed of a 15-foot kayak is 5.19 knots. Move up to a 16-foot kayak and the speed increases to 5.36 knots. It's important to note that this is a maximum speed, not the average speed you tend to travel over the course of a kayaking trip.
GPS Measurements
To calculate the speed you are traveling at during any given moment, use a GPS device. Not only will you gain information about speed, but a GPS device can also provide locational information that can help you navigate unchartered waters. Most GPS devices have a trip odometer, average moving speed as well as current speed. Satellite GPS information calculates speed, which can also be useful for improving your paddling technique or watching your fitness increase as you're able to sustain higher speeds.
Member Comments