I don't know what part of Maine you've been sailing in but radar is
hardly standard equipment up here.

I'll bet that there are far, far more radar sets though than there are
people trained enough in their use so that they could actually avoid
being hit by another vessel that wasn't keeping a visual watch. The
random way the lobsterboats loop around from trap to trap, even a
trained, full time, observer would have a hard time figuring out the
relative bearings.

--

Roger Long