uncleflo
Registered since September 28th, 2017
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Boat Lightning Attenuation Onboard
Saved by uncleflo on May 11th, 2021.
According to published reports, in the US out of the annual average of about 100 deaths due to lightning, approximately 13 are aboard boats. Suffice it to say that if lightning is a hazard where your boat will be used, a plan should be developed to deal with the possibility of a direct strike. In the Pacific Northwest lightning is relatively rare. In Florida, some areas annually have more than fifty strikes per square mile..! According to the well known lightning researcher Ewen Thompson, lightning can develop on the order of one hundred million volts, peak currents of tens of thousands of amps, and generate temperatures of some fifty five thousand degrees. Fortunately, it lasts only a fraction of a second, but within that time it can be deadly and / or very destructive. A lightning strike involves an extremely rapid change in an electric current, generating a momentary but extremely powerful magnetic field. This electro-magnetic pulse (EMP) will readily induce currents in adjacent wiring. Currents induced in wires by the EMP from a lightning strike may do some very weird things, such as fry every piece of electronics aboard. A strike nearby or on another boat can fry the electronics aboard your boat without even requiring an electrical connection or direct strike.
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Which drogue should you buy? 7 drogues on test - Practical Boat Owner
Saved by uncleflo on April 10th, 2021.
When your boat’s being battered by a storm and you want to ride things out, a drogue will make things more comfortable. But which one should you buy? We tested 7 to find out... Of all the safety kit we’re told is essential to ensure our safety at sea, a drogue is fairly low on most people’s lists, especially if they only sail in sight of land or in coastal hops. But drogues have many uses aboard, and could help you ride out a storm, enter a harbour safely, steer after the loss of a rudder or keep you safe under tow. They could, then, save your boat and your life. With many models available, we put seven to the test.
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