"RobWilton" wrote in message
...

"michael adams" wrote in message
...

"John Rowland" wrote in message
...

Incidentally, a police boat went up the river at about 11pm with siren
blaring, despite the fact that there were no other boats moving and no
possible benefit.of using the siren. Idiots.

Sirens on police cars, ambulances, and fire engines can serve two
purposes.

Both to clear people out of the way, but also to reassure callers that
help is
on the way. When for instance a vehicle may be stuck in traffic some
distance
away, but the siren would be clearly audible.

If people are in difficulties in or on the water in the dark, they're
likely
to hear a siren well before they'd see an approaching boat.


michael adams
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How will the rescuers hear the person who is shouting for help at night if
they have their siren blaring?

....

Why would the rescuers need to hear anyone shouting for help ?

They'll have been given the location already.

And their boats are all fitted with searchlights.

They're not simply cruising around, sirens blazing, on the off-chance
of finding someone crying for help.

And in any case, what about the sound of the boat's engine ?

Or are you suggesting they should maybe stick to row boats just in case ?



michael adams