Boatworks Most Commented

Name Changer

by Gordon West, Posted June 19, 2010
Paul Scott of Coral Gables, Florida, asks:

"I just bought a pre-owned boat that came with a fairly new 406 MHz EPIRB. I've checked the date on the battery, and it is fine, but when I contacted the FCC to change the registration information, they told me that they don't handle EPIRB registrations. Where should I go to re-register my unit?"

Gordon West


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Davit Delight

by Niels R. Jensen, Posted June 15, 2010
After many hours of discussion, my wife, Vicki, and I decided to install a set of davits on Freelance, our Pearson 36 cutter. We hoped davits would solve our dinghy storage problem and save us time getting the dinghy in the water. We also knew that not having to tow it astern would increase our boatspeed in light air.

We considered building custom davits, but decided that a clamp-on type


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Filter Your Fuel Off-line

by Chuck Husick, Posted June 15, 2010
It’s essentially true that if you give a marine diesel engine clean oil, clean air and clean fuel, it will run, if not forever, then certainly for longer than you are likely to own your boat. Using good-quality diesel oil and changing out the oil and oil filter at the manufacturer-recommended time intervals—typically every 200 hours—is a good first step. Similarly, if the air intake is correctly
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Energy Control

by Nigel Calder, Posted June 15, 2010
Recently, as part of my work on hybrid propulsion systems, I attended a demonstration where a large-scale lithium battery pack was deliberately pushed past the boundaries of existing experience. The intention was to run the system at 20 kW of output and 160 volts, creating a current flow of around 130 amps. Owing to a miscalculation, when we threw the switch and brought everything on line we
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Gear to Keep You Connected

by Tim Bartlett, Posted June 3, 2010
At the beginning of last season, the stroke of an official pen shut down an entire communications system and made half a million distress beacons obsolete, as the International Cospas-Sarsat satellite system stopped processing distress signals on 121.5MHz.

It wasn’t as bad as it might appear, though: the old 121.5MHz distress beacons hadn’t been doing much—other than adding to the tally of


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