Aluminum Boats And Lightning 950,Bass Boat For Sale Townsville Game,San Antonio Boat Ride Tickets Company - How to DIY
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Is your boat adequately protected from a strike? Sure, the odds of a person directly catching a bolt from the blue are quite low � about one in , in a calendar year, according to the National Weather Service.
Is your boat protected if it should be one of those hit? The short answer is: Probably not. The engines still ran, but they smoked and misfired horribly, with one unable to exceed rpm. The shore power and both generators were knocked out, as were all the LED running lights. The bow thruster was activated and was stuck running hard to port.
The big DC solenoid literally melted and was making continuous contact. The lightning entered on its destructive journey through an outrigger. From there, the current flowed down the hardtop bonding wire, eventually exiting through the engine block, the transmission and the propeller shaft into the water.
It also exited through the bow thruster and the shore power connection. If it had such a clear path, a veritable freeway for its journey, how did it damage so much equipment along the way? Damage to the engines occurred more directly. Like most yachts, this boat was properly bonded � meaning all underwater metal fittings and large metal objects were tied together electrically.
Propellers, with their large surface area and sharp corners, dissipate electricity well, providing an efficient path to ground.
But using them for this purpose energizes engines and transmissions along the way. This resulted in the boat running horribly; but it still ran. The lightning protection system installed on the boat in question is not uncommon and reflects production boat standards. The boat was built by a well-known company, and an equally reputable firm installed the tower and outriggers.
But it could have been more effectively protected. This strategy could have spared the engines as well. A well-maintained bonding system tied to at least one square foot of underwater metal typically protects people and prevents fire and structural damage.
While some misinformed old-timers say this encourages a strike by providing a clear path to ground, the Aluminum Boats And Saltwater 950 simple fact is a boat will always be a better conductor than air, so if it is near enough to a strike, it will become part of it. Ewen Thomson is a former electrical engineering professor at the University of Florida and a marine lightning expert.
He examined one sport-fishing boat after its ungrounded outrigger was struck. Thomson, a Ph. In simple terms, lightning is a buildup of static electricity, generally consisting of a positive charge on earth and a negative charge in the clouds. As impedance goes up, voltage goes up, and every conductor on the boat is at risk of forming side flashes.
For this reason he places through-hull electrodes � effectively reverse lightning rods � around the boat near the waterline to dissipate the strike. Shared with Permission from MotorBoating. Skip to content. Lightning-Proof Your Boat.
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