On Fri, 08 Mar 2024 07:44:23 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

<FLUSH the abnormal trolling senile cretin's latest trollshit unread>

On Thu, 7 Mar 2024 20:36:59 +0000, Andrew <Andrew97d@btinternet.com>
wrote:

>On 07/03/2024 13:55, Jeff Gaines wrote:
>> On 07/03/2024 in message <l4tt4hF7iheU1@mid.individual.net> alan_m wrote:
>>
>>> On 07/03/2024 12:35, Fredxx wrote:
>>>
>>>> In the mean time a lock full of water would have been dumped from
>>>> above the lock to below the lock.
>>>
>>> That's not necessarily how most of the locks work.   They have side
>>> pools. When a boat is lowered the water can be pumped to a side pool
>>> rather being dumped to a lower lock. The water in the side pool can
>>> then be pumped back to raise a boat. Panama has sets of parallel
>>> locks. The water from a full lock can be pumped sideways to fill a
>>> empty lock and then pumped back again when the original lock needs
>>> refilling.
>>>
>>> Some locks on British waterways also have similar water saving side
>>> pools but are not so efficient for saving water as they operate by
>>> gravity rather than being pumped.
>>
>> The Caen Steps are a good example:
>>
>> https://canalrivertrust.org.uk/places-to-visit/caen-hill-locks/an-uphill-struggle-caen-hills-history
>>
>
>Somewhere in Poland they haul a ship up an incline on a massive cradle
>running on rails, so no need for locks.
>
>It was shown on one of Michael Palins new Europe series about
>20 years ago.

I remember it. Youtube here
https://www.youtube.com/watch?v=k5xr6ny04DY
Catchy music as well.

Ah, here is another https://www.youtube.com/watch?v=48O65V17Zps
and another https://www.youtube.com/watch?v=qcyab9-_nF4

--
Chris

On 07/03/2024 20:36, Andrew wrote:
> On 07/03/2024 13:55, Jeff Gaines wrote:
>> On 07/03/2024 in message <l4tt4hF7iheU1@mid.individual.net> alan_m wrote:
>>
>>> On 07/03/2024 12:35, Fredxx wrote:
>>>
>>>> In the mean time a lock full of water would have been dumped from
>>>> above the lock to below the lock.
>>>
>>> That's not necessarily how most of the locks work.   They have side
>>> pools. When a boat is lowered the water can be pumped to a side pool
>>> rather being dumped to a lower lock. The water in the side pool can
>>> then be pumped back to raise a boat. Panama has sets of parallel
>>> locks. The water from a full lock can be pumped sideways to fill a
>>> empty lock and then pumped back again when the original lock needs
>>> refilling.
>>>
>>> Some locks on British waterways also have similar water saving side
>>> pools but are not so efficient for saving water as they operate by
>>> gravity rather than being pumped.
>>
>> The Caen Steps are a good example:
>>
>> https://canalrivertrust.org.uk/places-to-visit/caen-hill-locks/an-uphill-struggle-caen-hills-history
>>
>
> Somewhere in Poland they haul a ship up an incline on a massive cradle
> running on rails, so no need for locks.
>
> It was shown on one of Michael Palins new Europe series about
> 20 years ago.

Also the Falkirk Wheel to lift boats 24 metres

https://www.youtube.com/watch?v=qHO9gARac-w

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

On Thu, 7 Mar 2024 20:25:35 +0000, alan_m <junk@admac.myzen.co.uk>
wrote:

>On 07/03/2024 20:11, Rod Speed wrote:
>
>> When you have a massive great lock that can take a PANAMAX
>> and its a much smaller vessel moving thru the canal, OF COURSE
>> you lose a lot more water with the smaller vessel.
>
>The smaller vessel is likely to use the smaller original locks rather
>than the new larger locks. In addition, if the vessel is very small the
>lock would be stuffed with as many smaller vessel as it could take.
>

Interesting to use Google Earth to look at the canal system.

--
AnthonyL

Why ever wait to finish a job before starting the next?

On 07/03/2024 20:40, Andrew wrote:
> On 07/03/2024 19:51, Max Demian wrote:
>> On 06/03/2024 08:22, Jeff Gaines wrote:
>>>
>>> I'm sure people in here will know.
>>>
>>> There is an issue with the Panama Canal because of lack of water.
>>>
>>> On the Thames (slightly different scale) the water come in at the
>>> "high" end and is let out through a series of locks to the tidal Thames.
>>>
>>> Why can't the Panama Canal work on that basis?
>>
>> SEP (Someone Else's Problem).
>>
>
> The cost of shipping a lot of the stuff that Europe depends
> on has gone up because of the problems with the Panama canal
> and the middle east issues.

Fixing it is still SEP.

--
Max Demian

Reentrant <reentrant@invalid.org.uk> wrote:

> Another counter-intuitive fact - the western-most end of the canal meets
> the Caribbean, and the eastern-most end meets the Pacific.

I've used that as a good quiz question.

--
braind