In article , Donal
wrote:

"Peter Wiley" wrote in message
. ..

Got to agree with Joe on this issue of remembering outlines/picking
differences.

I don't disagree that one can become familiar with a coastline/river from
the radar picture.

I disagree with the proposition that a Radar watch(at 25 kts) can be
considered " an effective lookout".

I'd tend to agree with you. Mind you, radar can be *very* good. We have
2 on our icebreaker and I've steered through heavy sea ice using the
radar image to see where the leads are. Lotta fun and it doesn't really
matter if you turn a little wide or tight since it's OK to crunch over
stuff in the way.

Anyway, if damn fools are considered as worth the trouble of saving,
then running at 25 knots on radar only in heavy fog isn't prudent.
Personally, I wouldn't regard anyone stupid enough to go out onto a
busy waterway, in heavy fog, sans lights, radar reflector, radar, sound
signals, radio and in a hull that is a poor radar reflector as worth
saving. Anyone that stupid is a hazard to navigation and we're all
better off without them.

PDW