If you race sailboats, the benefits of an accurate speedometer are probably already fairly obvious to you. Even still, you might not sail with a speedo because you can’t be bothered to drill holes in your hull and wire-up a paddlewheel transducer.
Or maybe you already have a through-hull speedo but you’re sick of the transducer getting fouled and you’re never quite sure if the instrument is properly calibrated.
The award winning SpeedPuck is completely self contained and can be installed in seconds, without tools. Instead of using a paddlewheel, the SpeedPuck calculates your speed by measuring the Doppler shift in GPS signals to provide you with an updated reading every half-second. The SpeedPuck never needs to be calibrated and maintains uniform accuracy at all speeds.
A less than half-knot change in boatspeed doesn’t sound like much. It doesn’t feel like much either and that’s the problem.
Unless you have an accurate instrument like the SpeedPuck on board you probably won’t notice anything at first. Eventually you will notice though because even if you’re only 0.1 knots off pace, you’re losing more than a boatlength every three minutes. Without a good speedo, you’ll most likely be sucking exhaust by the time you realize that something’s wrong.
With the SpeedPuck you get a new speed measurement every half-second. If you wander into adverse current or your crew on the rail start slacking, the SpeedPuck will tell you right away.
What do you do when you read these words: "Please read this manual fully before using your new..." ? If you’re like most sailors you probably stop reading and immediately stash the document in an obscure location where it will suffer water damage and / or never be found again.
With the SpeedPuck we decided to get real and design a product that almost anybody can figure out and start using in a few minutes, without having to read anything.
You can try out the SpeedPuck’s ultra-simple user interface right now with the SpeedPuck online demo.
The SpeedPuck’s sunlight-readable high-contrast LCD screen features 27mm (1.1") tall digits in a font that’s optimized for readability. This means that if your boat’s under 40ft long you’ll be able to mount the SpeedPuck on your mast and read it easily from anywhere in the cockpit, even if you don’t have perfect vision.
The SpeedPuck’s shift tracker locks on to the mean heading for your tack and then shows deviations from that heading with an easy-to-read bar graph. If you tack or jibe again, the shift tracker detects this, resets the bar graph and locks on to your new tack.
All this happens 100% automatically; you don’t need to press any buttons to make it happen. The SpeedPuck constantly crunches the numbers for you in the background so that, whenever you happen to glance at the instrument, you can see how far you’re up or down.
The SpeedPuck is designed for long-term reliability in a saltwater marine environment. The device's case back screws off like the lid of a leak-proof water bottle to reveal the battery compartment.
The SpeedPuck's battery compartment is also sealed off from the rest of the device's electronics, providing a second layer of protection against moisture.
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