On Fri, 15 Aug 2008 08:55:31 -0000,  "Peter Stockdale"
<[EMAIL PROTECTED]> wrote:

>There is also the water usage factor to take in to account.

Indeed - especially on a long flight


>
>I wonder what would have been the procedure in the good old days when 
>a pair of motor and buttys met at a lock.
>I suspect that one pair would pass through and then the other.
>It would involve less work using that method.

And when the canals were better maintained - with side weirs, well
dredged canals meant more water in pounds  etc etc on some flights -
the time taken to turn a lock around would have been very quick.

-- 

Malcolm

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