Good Evenin' All,

I've just been fitted with a cardiac defribulator. This device comes with
instructions to avoid using cell phone in right ear and keep power-tools 12"
away from the device. Seems the risk is that strong magnetic fields may
damage the programming and cause the device to reset.

I currently live on a 53' Carver and the engine room has a lot of electrical
equipment: 50A Charging / Inverter, 2*Starters / Transformers on the
engines and Generator. My concern is that there is the potential for a
sizable magnetic field in the engine room and I simply don't (short of
saving up a few pennies and getting a crew) know how to avoid or manage the
issue.

Questions:

1. Has anybody had to consider this problem? What it a problem?
2. Any clever way I can judge the strength of the magnetic fields?

Thanks,

Dave