T&T: radar

[Jim Ague]

>... But, since the advent of modern electronic nav
> aides, the rate of shipwrecks can be counted on one hand with fingers
> left over. Sure, you can go without radar, but you proceed at your own
> peril.

So ranking the electronic nav aids, which has been most responsible in this 
reduction?

Depth Sounder
VHF Radio
GPS/Chartplotter
Hailer
Weather Forecasting
Autopilot
Radar

-- Jim