Cabling of chart plotter on a sail boat

Hi all,

I've just been out and bought a Garmin GPSMap 545 chart plotter. This comes
with a power/signal cable that is terminated with a unit connector in one
end and fans out to the varoius leads on the other.

I was planning so use it on-board my sailing boat in the north atlantic. It
should be placed in the cockpit so I can see the screen and when mooring,
disconnect it and bring the expensive unit inside.

To do this, I guess I have to drill a hole through the wall to the cockpit
and let the connector hang out exposed to wind and weather at all times
when the unit is not connected.

This seems rather harsh, so my question to all of you is simply, is it
prudent to have such a cable hanging out or do you have a better idea?


Oscar
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