Wednesday, April 15, 2009

Voyaging Tip #1 Lightning

When sailing in or near thunder clouds where lightning  is seen or heard then it is time to protect your portable electronics from electromagnetic radiation by using the onboard microwave oven as a Faraday cage. Portable items to be protected would be the EPIRB, Sat Phone, GPS, VHF, Quartz Watch, Digital Camera, Laptop, and Short Wave.  The conventional oven will also work as a Faraday cage but protection isn't 100% unless the oven window is covered with aluminum foil. Ground the rigging with  jumper cables  and trail the  opposite ends in the ocean. Unplug antennas  from the Radar, SSB, VHF, and GPS. The prudent sailor should still carry a sextant, mechanical chronometer, and a magnetic compass just in case.  

1 comment:

  1. Sailing in a thunder storm must be amazing, and maybe a little terrifying?