Malcolm wrote:
> On Fri, 08 Aug 2008 21:41:06 +0100, Brian from sunny Suffolk
> <[EMAIL PROTECTED]> wrote:
>
>
>> David Sullivan submitted this idea :
>>
>>
>>> BTW I would welcome some bollards at narrow locks as my
>>> 50ft boat is inexorably sucked forward at some locks to hit the top gate
>>> when the paddles are raised.
>>>
>>>
>> Stick it against the gate to start with
>>
>>
>
>
>
> Yes - but then what.
>
> Opening a paddle will often make the boat move back a meter or so and
> then once the water flows establishes itself the boat will be moved
> forward again - and hit the gate / cill.
>
> So you either use a line ashore to stop the boat moving back -
>
> use the engine to keep it against the cill/gate
>
> or open paddles very slowly.
>
>
> single handed - I choose to use a line - why burn fuel unnecessarily -
> especially in today's high fuel cost climate.
>
>
The key thing I've found with many locks is that you *open* the paddles
slowly. That doesn't mean you only open them a bit, but if you take,
say, 10 seconds to half open them rather than 2 it makes a *huge*
difference to the turbulence. It's that initial bit of water that
rushes down the culvert that seems to have the effect.
