"Jeff Morris" wrote in message
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"Donal" wrote in message
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"Joe" wrote in message
om...
"Donal" wrote in message
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Are you claiming that you can maintain a proper lookout with radar
alone?


Thats what I'm claiming Donal. I would not suggest it running a
strange river for the first time, but if you have navigated the same
area many times and you know it like the back of your hand then you
can safely run it with a quality fine tuned radar.

Emmmm... Aren't we discussing the Coll Regs? The International Rules
for
the avoidance of Collisions??

I don't see how "familiarity" with a particular stretch of water can
help
you avoid a collision.



So where in the Colregs does it say you can't run on radar alone? Of
course,
one should always have a visual (and sound) watch, but that is moot if
there is
effectively zero visibility. And yet many vessels maintain their normal
schedule in thick fog.

Or are you claiming that local knowledge is not an advantage in the fog?
Such
knowledge would certainly help one to keep the boat on a proper course, in
its
proper place in a channel.

No! I'm claiming that "local knowledge" does not mean that you may travel
at anything more than a safe speed!

25 kts in thick fog is NOT safe, if there is even the slightest possiblity
of an encounter with another craft.



The problem is that small boats without radar, that are not good
reflectors,
will be invisible. They have no business being out in fog.

Wow! I'm almost speechless (but not completely)!

Jeff, I would like to ask if the Coll Regs place any duty on a boat to be a
good reflector?

Do the Coll Regs place any duty on a vessel to keep a look out for other
vessels?




"Assumptions shall not be made on the basis of scanty information"
ColRegs,
Rule 7(c)


I think that is what I was saying!!




Regards


Donal
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